2026-07-07 Rochester Astronomy Club – Rochester Astronomy Club, Rochester, Minnesota The Rochester Astronomy Club is a 501(c)(3) non-profit based in Rochester, Minnesota, offering public night sky viewing events, member resources, and a club forum for amateur astronomers. The site features observing reports, event calendars, member blogs covering topics like Titan shadow transits and comet sightings, and outreach activities at local community events.
2026-07-07 Rockland Astronomy Club The Rockland Astronomy Club (RAC) is one of the East Coast's premier nonprofit astronomy education organizations, hosting star parties, lectures, dark sky observing sessions, and the renowned Northeast Astronomy Forum (NEAF). Visitors can find event schedules, observing locations at New York state parks, and information about joining a vibrant community of amateur astronomers.
2026-07-07 Roper Mountain Astronomers - RMA Home The Roper Mountain Astronomers (RMA) is a South Carolina astronomy club dedicated to sharing observational skills and astronomical knowledge with enthusiasts of all levels. The site features member astrophotos, club event listings, star parties, outreach programs, and highlights the historic 23-inch Charles E. Daniel Observatory refractor telescope.
2026-07-07 Russell Croman Astrophotography Russell Croman's astrophotography site showcases stunning deep-sky images including nebulae, galaxies, star clusters, and solar system objects captured with professional-grade equipment. With sections organized by celestial type and additional resources on equipment and publications, this is a richly curated portfolio of night-sky photography spanning over two decades.
2026-07-07 Saguaro Astronomy Club – Observing in Arizona Since 1977 The Saguaro Astronomy Club is an Arizona-based amateur astronomy organization that has been hosting star parties, outreach events, and observing programs since 1977. Members can find observing lists, award programs, novice guides on eyepieces and binoculars, newsletters, and a full calendar of events including the Grand Canyon Star Party and the Arizona Spring Star Party.
2026-07-07 Sangamon Astronomical Society The Sangamon Astronomical Society is an astronomy club based in Springfield, Illinois, hosting monthly member meetings and an annual Illinois Dark Skies Star Party at Jim Edgar Panther Creek State Fish and Wildlife Area. The site offers membership information, a photo gallery, sky charts, maps, and links to resources like the Astronomical League and Night Sky Network.
2026-07-07 SBAS Web Page The official website of the Shreveport-Bossier Astronomical Society, a non-profit astronomy club active in Louisiana since 1959, offering free public observing nights, access to the historic Shreveport Observatory, and resources covering astrophotography, variable star observation, and more. Visitors can find meeting schedules, membership info, observing certificates, and a curated list of astronomy links ranging from NASA to Sky and Telescope Magazine.
2026-07-07 SBAU Home Page The Santa Barbara Astronomical Unit (SBAU) is an active astronomy club based in Santa Barbara, California, hosting monthly public meetings featuring talks by prominent researchers from NASA, JPL, and leading universities. The site offers event calendars, dark sky site listings, equipment for sale, newsletters, and a rich archive of past speaker videos dating back to 2008.
2026-07-07 Schurs Web Portal Schur's Web Portal is a personal site showcasing the creator's passion for nighttime astrophotography alongside interests in running and paleontology. The astrophotography section appears to be the dominant focus, making this a compelling destination for amateur astronomers and stargazers.
2026-07-07 Schwarze Löcher | Singularitäten A detailed German-language educational site covering black holes and singularities, exploring topics from stellar and supermassive black holes to Hawking radiation, mathematical models, and even the theoretical dangers of black holes at CERN. The site draws a fascinating parallel between modern astrophysics and Norse mythology's concept of the Maelstrom, making complex science accessible through storytelling.
2026-07-07 Sea and Sky - Explore the Oceans Below and the Universe Above Sea and Sky is a dual-themed educational resource covering both ocean life and the universe, with sections on coral reef creatures, deep sea exploration, saltwater aquariums, constellations, and space exploration timelines. Visitors can browse image galleries, play free sea-themed games, read news headlines, and dive into hundreds of curated links covering marine biology and astronomy alike.
2026-07-07 SEDS Messier Database The SEDS Messier Database is a comprehensive reference for all 110 objects in Charles Messier's famous catalog of nebulae, star clusters, and galaxies, compiled by the French astronomer between 1758 and 1782. Visitors can browse detailed entries with images, follow Messier Marathon news and results, and explore deep sky objects organized by type, making this a go-to resource for amateur astronomers worldwide.
2026-07-07 Seiichi Yoshida's Home Page Seiichi Yoshida's comprehensive comet resource site offers extensive catalogs, weekly bright comet updates, light curves, and thousands of photographs tracking comets from around the world. Yoshida is a notable amateur astronomer who even had a minor planet named after him, and his MISAO project leverages global imagery to detect and track remarkable astronomical objects.
2026-07-07 SETI@home SETI@home is the legendary UC Berkeley distributed computing project that enlisted millions of volunteers worldwide to analyze radio telescope data in the Search for Extraterrestrial Intelligence. Though now in hibernation and no longer distributing tasks, the site preserves its community message boards, user statistics, and ongoing back-end data analysis efforts that continue to this day.
2026-07-07 Shenandoah Valley Stargazers The Shenandoah Valley Stargazers (SVS) is an amateur astronomy club based in the Staunton, Waynesboro, and Harrisonburg, Virginia area, offering observing events, astrophotography, education, and community outreach. The club operates its own observatory in Stokesville, VA and welcomes families, groups, and the public to explore the night sky together.
2026-07-07 Sidewalk Astronomers Website The Sidewalk Astronomers are a public service amateur astronomy association founded in the tradition of John Dobson, dedicated to bringing telescopes directly to the public in parks, street corners, and busy public spaces. The site features event schedules, telescope plans, newsletters, international projects, and resources for local chapters around the world.
2026-07-07 Sirius Lookers – Sedona Arizona Astronomy – Sedona Arizona Astronomy Club Sirius Lookers is a free, dues-free amateur astronomy club based in Sedona, Arizona, welcoming anyone with an interest in looking up at the night sky. The site lists monthly meeting schedules at the Sedona Public Library, upcoming star parties, viewing locations, moon phases, and links to dark sky resources and other astronomy clubs.
2026-07-07 Skokie Valley Astronomers Home: The Skokie Valley Astronomers was a beloved Illinois-based amateur astronomy club that ran for over 50 years, hosting public meetings, presentations, and events dedicated to stargazing and sky watching. The site serves as a farewell archive and resource hub, featuring newsletters, images, and links to other local astronomy clubs for members and enthusiasts to continue their passion.
2026-07-07 Skymaps.com - Publication Quality Sky Maps & Star Charts Skymaps.com, created by Kym Thalassoudis, offers free monthly sky maps and star charts in PDF format to help amateur and professional skywatchers explore constellations, planets, and comets. The site also features a curated store with planispheres, star atlases, telescopes, and astronomy books for all skill levels.
2026-07-07 skytour Wes's astronomy hub, active since 1995, offers a rich collection of observing logs, sketch galleries, comet documentation, meteor shower reports, and essays drawn from decades of visual astronomy with a 10-inch Dobsonian telescope. Highlights include extensive Oregon Star Party trip reports spanning nearly two decades, comet scrapbooks for Hale-Bopp and Hyakutake, and thoughtful amateur astronomy essays that range from beginner telescope guides to celestial measurement explanations.
2026-07-07 SMAS Home Page The Southern Maryland Astronomical Society (SMAS) is an amateur astronomy club that meets twice monthly at the Nanjemoy Creek Observatory in southern Maryland, home to a Celestron CGE 1400 Schmidt-Cassegrain 14-inch telescope. Members range from beginners to seasoned observers with decades of experience, and the club welcomes donations and new members to support its nonprofit mission.
2026-07-07 Solar System Live Solar System Live is an interactive web orrery created by John Walker that lets visitors visualize the entire solar system or inner planets at any date, time, and viewpoint they choose. Users can track asteroids and comets using orbital elements, generate custom star maps, and save personalized configurations as bookmarks, making it a genuinely useful tool for amateur and serious astronomers alike.
2026-07-07 Solar Terrestrial Dispatch Solar Terrestrial Dispatch is a 36-year-old space weather service offering near real-time auroral activity mosaics, solar wind data, X-ray flux readings, and experimental flare prediction heatmaps updated every two minutes. Visitors can track geomagnetic conditions, monitor the electrical power grid demand, and view stunning satellite imagery of aurora activity over both hemispheres.
2026-07-07 SolarSailWiki SolarSailWiki is a community-edited wiki dedicated entirely to solar sail spacecraft, covering the science of light pressure, mission histories, technologies, and future applications for propellantless space travel. With sections on design, real-world missions like the Planetary Society's LightSail, books, papers, and conferences, it serves as a comprehensive reference for anyone fascinated by this elegant form of space propulsion.
2026-07-07 Sostrata's Personal Page Elia Rowan's personal site is a rich mix of worldbuilding and space enthusiasm, featuring original fictional universes, a Kerbal Space Program journal, and a playful page about Venus alongside creative writing projects. The site has a distinctly old-web feel with hundreds of collected blinkies, stamps, and web badges alongside deep speculative content about the structure of imagined cosmologies.
2026-07-07 South Shore Astronomical Society The South Shore Astronomical Society is a community astronomy club bringing together stargazers and space enthusiasts in the South Shore region. This appears to be the club's official web presence, serving as a hub for members and those interested in joining a local astronomical society.
2026-07-07 Space and Astronomy Links Compiled by Vincent Needham at Kansas State University, this extensive link directory covers virtually every corner of space and astronomy on the web, from advocacy groups and industry players to SETI projects and digital sky surveys. With over 270 curated links organized into categories like amateur rocketry, space missions past and future, telescopes, and planetary science, it serves as a thorough reference hub for space enthusiasts and researchers alike.
2026-07-07 Space Archive - The Southwest's Source for Regional Space Information Space Archive, maintained by Brian Webb since 2000, is a comprehensive regional resource covering space and astronomy for the American Southwest, with a particular focus on Vandenberg Space Force Base rocket and missile launches including schedules, viewing guides, launch history, and multimedia. The site also features astrophotography tips, suburban astronomy guides, dark sky sites, and over two decades of archived space and astronomy news.
2026-07-07 Space Index The faqs.org Space Index is a comprehensive archive of Usenet FAQs dedicated to astronomy and space topics, covering everything from acronyms and data sources to how to become an astronaut and controversial space questions. Maintained across dozens of indexed documents, it serves as a structured reference hub for space enthusiasts and researchers seeking archived FAQ documents from the early internet era.
2026-07-07 Space Weather by SolarHam SolarHam is a comprehensive real-time space weather monitoring hub, tracking solar flux indices, sunspot regions, geomagnetic forecasts, CME activity, and X-ray data from sources like NOAA, SOHO, and STEREO. Packed with live imagery, solar wind feeds, and 3-day geomagnetic outlooks, it serves as an essential reference for amateur radio operators, aurora chasers, and space weather enthusiasts alike.
2026-07-07 Spaceflight Now | Breaking News | Proof found for gamma-ray burst in Milky Way Spaceflight Now is a dedicated space news outlet covering breaking stories from NASA missions, rocket launches, and astronomical discoveries, including this article presenting evidence of a gamma-ray burst within the Milky Way galaxy. The site features premium video content covering events like the Cassini Saturn arrival, Mars rover updates, and Hubble Space Telescope news, making it a rich hub for space enthusiasts and science followers.
2026-07-07 Spaceship Design A work-in-progress book project aimed at giving science fiction authors and scriptwriters the real engineering and physics knowledge needed to design plausible spacecraft. The site outlines chapter topics ranging from propulsion systems and structures to weapons and re-entry, covering everything from chemical rockets to theoretical Alcubierre warp drives.
2026-07-07 Spectra Jim Kaler's comprehensive guide to stellar spectra covers everything from absorption and emission lines to the Doppler effect and spectral classification, all richly illustrated with images of rainbows, nebulae, and spectrograms. Part of Kaler's broader STARS educational project hosted at the University of Illinois, this deep-dive reference explains how astronomers decode the physical and chemical nature of stars through the light they emit.
2026-07-07 Spectral Types A detailed reference table from a university astronomy course listing spectral types of stars across main sequence, giant, and supergiant classifications, with corresponding temperature, absolute magnitude, luminosity, and mass values. Covering everything from scorching O5 stars down to cool T8 brown dwarfs, this page serves as a compact but comprehensive stellar classification resource for students and enthusiasts alike.
2026-07-07 Springfield STARS – Amateur Astronomy in Western Mass The Springfield STARS is an amateur astronomy club based in Western Massachusetts, holding monthly meetings at the Springfield Science Museum from September through May. Visitors can find astronomy articles, outreach events, and club meeting details, making it a welcoming hub for stargazers in the region.
2026-07-07 Star in a Box Star in a Box is an interactive educational tool from Las Cumbres Observatory that lets you animate and explore the full lifecycle of stars across a range of solar masses using the famous Hertzsprung-Russell diagram. Visitors can watch how a star's brightness, size, surface temperature, and mass evolve over billions of years, with downloadable data tables for independent investigation.
2026-07-07 Star Light, Star Bright ... Stars Fanlisting Star Light, Star Bright is a TFL-network fanlisting dedicated to stars, inviting fans from around the world to add their names to a growing list of 647 members who share a love of stargazing. Run by Melanie, the site is a simple but charming tribute to the beauty of the night sky.
2026-07-07 Star Shadows Remote Observatory Home Page Star Shadows Remote Observatory (SSRO) was a cooperative astro-imaging venture cofounded by Rick Gilbert, Jack Harvey, Steve Mandel, and John Pierce, producing deep-sky images from New Mexico and Cerro Tololo Inter-American Observatory in Chile from 2004 to 2018. The archived site offers access to their gallery, equipment details, and documents from over a decade of collaborative astrophotography.
2026-07-07 StarChild A Learning Center for Young Astronomers: StarChild is NASA's Goddard Space Flight Center educational resource designed to introduce young astronomers ages 5-13 to the solar system, the Milky Way, and the broader universe. Organized into two skill levels, the site covers topics from comets and black holes to galaxies and space terminology, making complex astronomical concepts accessible to children.
2026-07-07 StarryWonders Astrophotography Steve Cannistra's StarryWonders is a deep-dive into astrophotography, featuring stunning CCD images of nebulae and galaxies alongside detailed technical guides on subexposure time, binning, CCD cooling analysis, and bicolor Ha/OIII processing. The site is a treasure trove for serious amateur astronomers, combining a rich image gallery with spreadsheets and tutorials that go well beyond typical hobbyist pages.
2026-07-07 start [NEKAAL] NEKAAL (Northeast Kansas Amateur Astronomers' League Inc.) is the official site for an astronomy club based in Northeast Kansas, home to the Farpoint Observatory. Visitors can find upcoming public astronomy nights, general meeting schedules, astro images, observer archives, and links to educational resources for amateur stargazers.
2026-07-07 StarWatch Moravian College Astronomy: StarWatch is a weekly astronomy column produced by Moravian College covering night sky events, star maps, moon phases, and detailed guides to constellations and celestial phenomena visible from the Lehigh Valley region. Written by Dr. Terry Pundiak, each installment combines accessible storytelling with genuine astronomical depth, covering topics from the imaging of the M87 black hole to the mechanics of Easter dating and the effects of precession on telescope alignment.
2026-07-07 Steele County Astronomical Society The Steele County Astronomical Society (SCAS) is an Owatonna, Minnesota-based astronomy club affiliated with the Astronomical League, organizing events like Messier Marathons, park viewing nights, and observatory tours. The site lists the club's annual schedule, membership information, and links to the Owatonna Clear Dark Sky Report for planning observation sessions.
2026-07-07 Stellafane Home of the Springfield Telescope Makers: Stellafane is the historic home of the Springfield Telescope Makers of Vermont, hosting one of the oldest and most celebrated amateur telescope making conventions in the world. The site offers comprehensive guides on building Dobsonian telescopes and grinding mirrors, a rich archive of convention history, an astrophoto gallery, and resources for beginners getting started in amateur astronomy.
2026-07-07 Supernova Remnant (SNR) Catalogue or Catalog of Galactic SNRs Maintained by D. A. Green at the Cavendish Laboratory in Cambridge, this is a comprehensive scientific catalogue of 310 known Galactic supernova remnants, updated through October 2024. It includes detailed listings, alternate names, summary data, and links to astrophysics literature via the ADS system, making it an essential reference for researchers and astronomy enthusiasts alike.
2026-07-07 Surveying the Galaxy | Galaxy Map Galaxy Map, created by Kevin Jardine, is a detailed scientific resource explaining how astronomers measure distances to objects within the Milky Way using parallax and related surveying techniques. The site covers exotic galactic objects like black holes, microquasars, and supernova remnants, with dedicated sections on hydrogen mapping, velocity mapping, and tools like VLBI and the Hipparcos and Gaia satellites.
2026-07-07 Tacoma Astronomical Society The Tacoma Astronomical Society is a non-profit astronomy club based in the Tacoma region, offering public observing nights, general meetings, outreach events for local schools, and an active student group for preschool through high school age participants. The site serves as a hub for club news, event calendars, a photo gallery featuring member astrophotography, and resources for amateur astronomers of all experience levels.
2026-07-07 Tamke-Allan Observatory, serving students, astronomers and the public of East Tennessee The Tamke-Allan Observatory at Roane State Community College in East Tennessee hosts public stargazes, telescope-making workshops, and astrophotography events for students and amateur astronomers alike. Visitors can explore images of nebulae and planets captured through the observatory's equipment, find astronomy calendars for the Knoxville area, and connect with the local ORION observing group.
2026-07-07 TCAS Treasure Coast Astronomy The Treasure Coast Astronomy Society (TCAS) maintains this site as a hub for amateur astronomers along Florida's Treasure Coast, covering topics like astrophotography, telescopes, and optical instruments. With keywords spanning apochromatic refractors, go-to mounts, and astronomy software, this is a classic old-web astronomy club presence for serious hobbyists and stargazers.
2026-07-07 Telescope Field Of View and Power Calculator An interactive eyepiece calculator for amateur astronomers that computes magnification and true field of view based on telescope focal length and aperture. It includes a comprehensive built-in database of eyepieces from major brands like Celestron, Meade, Pentax, Vixen, and Zeiss, plus support for custom eyepiece data entry.
2026-07-07 the @stro pages - astronomy and space for the amateur The @stro Pages is a long-running amateur astronomy hub offering astrophotos, articles, telescope making guides, an observer's log, and a San Diego stargazing calendar. Packed with community features like discussion boards, a monthly newsletter, and links to deep-sky objects, it serves both beginners and experienced skywatchers.
2026-07-07 the @stro pages - glossary The @stro Pages is a comprehensive amateur astronomy resource featuring a full A-Z glossary of astronomical terms, astrophotos, articles, and an observer's log focused on the San Diego area. With sections covering telescope making, deep-sky objects, and a local astronomy calendar, it serves as a rich hub for stargazers of all experience levels.
2026-07-07 The Astronomer Magazine The Astronomer is a long-running UK amateur astronomy magazine with a history dating back to 1964, featuring meteor shower guides, supernova lightcurves, and annual meeting records. Compiled largely by Tracie Heywood, the site offers a complete magazine index, historical awards archives, and observational data useful for both visual and radio observers.
2026-07-07 The Astronomical Society Of New Haven, INC The Astronomical Society of New Haven (ASNH) has been connecting Connecticut stargazers for over 80 years, offering public star parties, observing events, astrophotography resources, and a radio show called Cosmic Perspective. Visitors can browse an event calendar, access sky charts, meteorite information, NASA content, and even a book by ASNH member Ruben Kier titled 'The 100 Best Targets for Astrophotography.'
2026-07-07 The Astronomical Unit - Tutorials - Glossary The Astronomical Unit is a comprehensive astronomy tutorial site covering everything from choosing a first telescope to positional astronomy, stellar evolution, and debunking pseudoastronomy claims. Visitors will find practical guides, a detailed glossary, book recommendations, DIY telescope projects, and rigorous critiques of popular astronomical myths like the '2012 nonsense' and Apollo conspiracy theories.
2026-07-07 The Astronomy Cafe An archived recreation of Dr. Sten Odenwald's legendary 'Astronomy Cafe' website from circa 2001, once a destination where a professional astronomer answered thousands of public questions about space, the universe, and infrared astronomy. The site preserves a nostalgic snapshot of early web science outreach, featuring Dr. Odenwald's books, his 'Ask the Astronomer' feature, and philosophical explorations of concepts like 'nothing' and the Big Bang.
2026-07-07 The Astronomy Cafe | Sten's Space Blog NASA scientist-educator Sten Odenwald has maintained this astronomy education hub for over 20 years, filling it with popular essays on cosmology, black holes, space travel, and the weird corners of nature. Visitors will find Q&A resources, blog posts on recent space discoveries, and details on his published books including a photo-filled history of space exploration through 100 iconic objects.
2026-07-07 The Baton Rouge Astronomical Society The Baton Rouge Astronomical Society (BRAS) is a Louisiana-based astronomy club founded in 1981, bringing together roughly 95 amateur and experienced stargazers in the greater Baton Rouge area. Visitors can browse monthly observing guides, member astrophotos, a newsletter archive, dark sky advocacy efforts, and information on joining or attending events at the Highland Road Park Observatory.
2026-07-07 The Calendar Zone -- Bringing Order to Calendrical Chaos! The Calendar Zone, created by Janice McLean, is a comprehensive categorized directory of calendar-related links covering art, celestial, cultural, religious, historical, and reform topics. With over 7 million visitors since 1999, it serves as a one-stop hub for anyone curious about calendar systems, moon phases, lunar cycles, and the history of timekeeping across cultures.
2026-07-07 The Constellations Created by Richard Dibon-Smith, this site provides graphics and reference information for all 88 officially recognized constellations, from Andromeda to Vulpecula. Each constellation gets its own dedicated page, making it a handy visual reference for amateur astronomers and sky-watchers.
2026-07-07 The Curious Skywatcher The Curious Skywatcher is a dedicated astronomy blog offering monthly celestial highlights, including planet positions, meteor showers, and sky-watching tips for amateur stargazers. Posts guide readers on locating stars and planets with the naked eye, making it a friendly and practical resource for anyone wanting to explore the night sky.
2026-07-07 The Deep Sky Database The Deep Sky Database is an online observing list generator for amateur astronomers, drawing on the Saguaro Astronomy Club's meticulously maintained databases to help users search for galaxies, nebulae, star clusters, double stars, asterisms, and more. Built on decades of collaborative contributions from club members, it offers searchable access to well-known catalogs including Messier, Caldwell, Herschel 400, and Herschel 2500 objects, making it a practical planning tool for backyard stargazers.
2026-07-07 The Dr. Richard Feynman Observatory Named in honor of Nobel Prize-winning physicist Richard Feynman, this amateur astronomy site showcases CCD astrophotography of nebulae, planets, and galaxies captured through telescopes ranging from a 4-inch Takahashi to a Celestron C11. Visitors will find detailed equipment reviews, imaging guides, comet and planet sequences, and a rich gallery of deep-sky objects including the Horsehead Nebula, M42, and Hale-Bopp.
2026-07-07 The Federation of Astronomical Societies The Federation of Astronomical Societies is a UK-based umbrella organization connecting amateur astronomy clubs and societies across Britain. It serves as a hub for coordinating events, sharing resources, and supporting the broader community of stargazers and astronomical enthusiasts in the region.
2026-07-07 The Final Frontier The fanlisting for Space.: The Final Frontier is a fanlisting dedicated to the wonder of outer space, collecting fans from around the world who share a passion for the cosmos. With 77 members from 25 countries and a stunning Hubble image of galaxy NGC 660 as its backdrop, it captures the community spirit of space enthusiasm in classic fanlisting style.
2026-07-07 The JOVE Bulletin December 2008 Issue The December 2008 issue of The JOVE Bulletin covers NASA's Radio JOVE Project, a program enabling students and educators to build simple radio telescopes and observe solar and planetary radio emissions. Highlights include field reports of Jupiter radio storm observations, a gallery of radio spectrograms, and news about Radio-SkyPipe 2 software for amateur radio astronomy.
2026-07-07 The Maya Astronomy Page Created by Michiel Bijl, this site explores Maya astronomy alongside related topics like Maya mathematics, the Maya calendar, Maya writing, and geographical orientation. It offers a fascinating intersection of ancient cultural knowledge and astronomical science, with pictures, recommended reading, and curated links.
2026-07-07 The Meteorite Market The Meteorite Market has been one of the web's oldest meteorite dealers since 1995, offering over 100 scientifically significant varieties including Martian, Lunar, Pallasite, and Carbonaceous Chondrite specimens with detailed photos and pricing. Visitors can browse an extensive alphabetical catalog while learning about meteorite types through dozens of informational pages, making it both a shopping destination and an educational resource for collectors and enthusiasts alike.
2026-07-07 The Mohawk Valley Astronomical Society (MVAS) The Mohawk Valley Astronomical Society (MVAS) has been connecting amateur astronomers in Central New York since 1989, offering public stargazing events, monthly meetings, and access to the Barton-Brown Observatory. The site includes astro photos, beginner tips, a newsletter archive, and a full schedule of club events and star parties for members and the public alike.
2026-07-07 The National Deep Sky Observers Society The National Deep Sky Observers Society (NDSOS) is a worldwide amateur astronomy organization founded in 1976, dedicated to those who observe galaxies, nebulae, and star clusters. Members receive a quarterly journal called Betelgeuse, access to professional astronomical databases, and networking with fellow deep sky enthusiasts across the globe.
2026-07-07 The New Astronomy Home Page Ron Wodaski's companion site to his book 'The New Astronomy' offers a comprehensive online guide to CCD astrophotography, covering everything from focusing and exposure to advanced image processing. With ten full chapters available online by subscription, plus sample content and a community discussion group, it serves as a practical resource for beginner and intermediate amateur astronomers.
2026-07-07 The Observatory Mars, a 20-something university student, built this space-themed personal site called The Observatory as both a creative outlet and a first coding project. The site features personal pages covering favorites, original characters, and infodumps, all wrapped in a stargazing aesthetic with pixel art and a love of space at its heart.
2026-07-07 The Official Web Site of the Center for Archaeoastronomy and ISAAC The official web presence of the Center for Archaeoastronomy, a professional research organization founded at the University of Maryland in 1978, dedicated to the interdisciplinary study of astronomy in ancient and indigenous cultures. Visitors can explore peer-reviewed publications, newsletters, essays on ethnoastronomy, and learn about ISAAC, the international society promoting archaeoastronomy worldwide.
2026-07-07 The Population of Space | Nefarious Plots An interactive data visualization called 'The Population of Space' charts every human spaceflight from Yuri Gagarin in 1961 through 2014, grouping missions by launch vehicle and coloring them by historical era. Created in honor of the 45th anniversary of Apollo 11, it offers a fascinating way to explore how long humans have spent in space, which nations sent them, and how the shift from Soviet stations to the International Space Station shaped our continuous presence off-world.
2026-07-07 The Scale of Things A concise educational page from stellar-database.com that walks readers through the mind-bending scale of the universe, from the Earth's diameter out to the edge of the known cosmos. It explains astronomical units, light-years, and parsecs with precise conversion figures, making vast cosmic distances tangible and comparable.
2026-07-07 The SETI League Searching for Extra-Terrestrial Intelligence: The SETI League is a nonprofit membership organization dedicated to the privatized electromagnetic search for extraterrestrial intelligence, coordinating amateur radio astronomers worldwide in the hunt for signals from other civilizations. The site offers extensive technical resources covering antennas, receivers, and software, alongside publications, press releases, and the popular "Ask Dr. SETI" column.
2026-07-07 The Skyhound's Guide to Deep Sky Objects Skyhound's Guide to Deep Sky Objects is a comprehensive reference covering every major category of deep sky objects, from open star clusters and globular clusters to quasars and gravitational lenses. Each section explains what the objects are, how they appear through a telescope, and highlights notable examples like the Veil Nebula, Einstein's Cross, and the Pleiades.
2026-07-07 The Solar FAQ Solar Neutrinos and Other Solar Oddities: Written by Sverker Johansson, this detailed FAQ explores the science of solar neutrinos, nuclear fusion in the sun, helioseismology, and the famous solar neutrino problem with rigorous depth and extensive references. It also addresses creationist arguments about the sun, making it a uniquely thorough resource for both scientific education and skeptical inquiry.
2026-07-07 The very latest SOHO images NASA's SOHO (Solar and Heliospheric Observatory) mission serves up the very latest real-time solar images captured by instruments including EIT, LASCO, and SDO/HMI, updated continuously from the spacecraft. Visitors can explore the sun in multiple wavelengths and coronagraph views, making this an invaluable resource for solar observers, space weather enthusiasts, and researchers alike.
2026-07-07 The VLA's First Twenty Years A commemorative background page from the National Radio Astronomy Observatory celebrating the VLA radio telescope's first twenty years of scientific discovery, covering breakthroughs from Mercury's icy poles to gravitational lenses and gamma ray bursts. Packed with links to research highlights, aerial photos, visitor information, and introductory radio astronomy materials, it serves as both a historical record and an educational gateway to one of the world's most powerful telescopes.
2026-07-07 The Webb Deep-Sky Society The Webb Deep-Sky Society is an international organization founded in 1967 bringing together amateur and professional astronomers devoted to observing double stars and deep-sky objects such as galaxies, nebulae, and clusters. Members receive access to publications like The Deep-Sky Observer, monthly featured objects, star atlases, and invitations to annual meetings and star parties.
2026-07-07 The Whole NGC A comprehensive index of the entire New General Catalogue (NGC), organized into batches of 100 objects spanning all 7,840 entries, created by an amateur astronomer named Benoit. This deep-sky reference resource gives stargazers and astronomy enthusiasts a structured way to browse every NGC object from galaxies and nebulae to star clusters.
2026-07-07 The Year In Space - Online Calendar The Year In Space is a weekly online calendar that highlights space history, sky events, and astronomical milestones, pairing each entry with detailed write-ups and NASA imagery. Each week features a featured topic such as the discovery of Ceres or the Cassini mission, alongside a day-by-day calendar of notable birthdays, launches, and celestial events.
2026-07-07 Toruses and Dyson Swarms Bob's detailed technical exploration of Dyson swarms and torus-shaped satellite constellations covers the mathematics and orbital mechanics behind capturing a star's energy output. The page features interactive JavaScript simulations letting visitors visualize these megastructure concepts from within the swarm itself, alongside references to real-world applications like SpaceX's Starlink constellation.
2026-07-07 transient astronomy A detailed reference page from the astro.vaporia.com astrophysics index, covering transient astronomy and the study of short-lived astronomical phenomena such as supernovae, gamma-ray bursts, fast radio bursts, and gravitational wave events. It catalogs major sky surveys like ZTF, Pan-STARRS, and the Rubin Observatory, making it a useful entry point for anyone exploring time-domain astronomy.
2026-07-07 Tri-Valley Stargazers, Livermore CA The Tri-Valley Stargazers is an amateur astronomy club based in Livermore, California, serving the east San Francisco Bay Area with star parties, observing programs, loaner telescopes, and monthly public meetings featuring guest speakers. The site covers club membership benefits, viewing site details, upcoming events, and resources for hobbyist astronomers at all levels.
2026-07-07 UACNJ The United Astronomy Clubs of New Jersey (UACNJ) operates multiple observatories at Jenny Jump State Forest and hosts regular public stargazing nights, meteor shower events, and astronomy programs for all ages. The site serves as a hub for member clubs, event scheduling, live sky cameras, newsletter archives, and donation drives for new observatory construction.
2026-07-07 Uncle Rod Mollise's Astro Land! Uncle Rod Mollise's Astro Land is a long-running amateur astronomy hub hosted at 'Chaos Manor South,' packed with telescope guides, equipment reviews, CCD and webcam imaging tips, and resources for Schmidt-Cassegrain telescope users. Rod also runs the Mobile Astronomical Society and offers a free Used CAT Buyer's Guide, making this a genuinely useful stop for backyard astronomers of all levels.
2026-07-07 Untitled Clark M. Thomas offers a detailed analysis of comet imaging techniques, comparing amateur astrophotographer Damian Peach's stunning wide-field ISON image against the professional Subaru telescope's shot of Comet Lovejoy. The article makes a compelling case for tracking background stars rather than the comet itself, arguing that the resulting sharp stellar fields and visible deep-sky objects produce the most visually rewarding comet photographs.
2026-07-07 Untitled Clark M. Thomas presents a critical essay arguing against the viability and ethics of Mars colonization, countering popular arguments with Malthusian population theory and opportunity cost reasoning. The piece challenges billionaire-backed space colony fantasies by urging focus on Earth's existing ecological and humanitarian crises instead.
2026-07-07 Untitled Clark M. Thomas offers a witty essay examining the movie Battleship through the lens of real SETI science, exploring the plausibility and implications of contact with extraterrestrial civilizations. The piece weaves together astronomy, pop culture criticism, and philosophical musings about what our radio and TV signals might reveal to any alien observers.
2026-07-07 USA - 1970 March 7 Total Solar Eclipse - Interactive Google Map - Xavier Jubier Xavier Jubier's interactive Google Map traces the path of the March 7, 1970 total solar eclipse across the USA and Mexico, offering a precise geographic visualization of the event's totality corridor. Part of a larger solar eclipse resource site, this page combines historical astronomical data with modern mapping tools to help enthusiasts and researchers explore eclipse paths.
2026-07-07 USA - 1984 May 30 Annular Solar Eclipse - Interactive Google Map - Xavier Jubier Xavier Jubier's interactive Google Map traces the path of the May 30, 1984 annular solar eclipse across the USA, offering a detailed geographic visualization of this historical celestial event. Part of a larger solar eclipse resource site, this page lets visitors explore the eclipse path with precision using interactive mapping technology.
2026-07-07 Useful Links – British Astronomical Association The British Astronomical Association, supporting amateur astronomers since 1890, maintains this curated directory of useful links covering UK astronomy societies, observing resources, and related organizations. Visitors will find connections to groups like the Society for Popular Astronomy, the Federation of Astronomical Societies, and many more resources spanning the full breadth of amateur astronomy.
2026-07-07 Useful Links – Wellington Astronomical Society The Wellington Astronomical Society maintains this curated links page connecting visitors to astronomy resources across New Zealand and beyond, from national societies to educational tools for children. Organized into regional and international sections, it serves as a handy gateway to observatories, sky guides, STEM activities, and fellow astronomy clubs throughout New Zealand.
2026-07-07 Useful links - Norwich Astronomical Society The Norwich Astronomical Society maintains this curated links page pointing visitors to national bodies, local clubs, observatories, and online resources for amateur astronomers in the UK. Based at Seething Observatory in Norfolk, the society offers a well-organized gateway to stargazing locations, observing programmes, and space science topics including meteorites and solar sails.
2026-07-07 Utah Valley Astronomy Association The Utah Valley Astronomy Association (UVAA) is an informal stargazing club based in Utah Valley, founded in the early 1990s by Rich Tenney and maintained online by Paul Witte, offering a community for observational astronomy enthusiasts with no dues or obligations. The site preserves the club's history and hosts a notable Binocular Astronomy Resource Page, along with links to star parties, a member gallery, and connections to other Utah astronomy societies.
2026-07-07 Views of the Solar System Photo Gallery Created by Calvin J. Hamilton, Views of the Solar System is an expansive photo gallery cataloging images of every planet, moon, asteroid, comet, and deep-space phenomenon in our solar system and beyond. With hundreds of categorized photos organized by target and feature type, including spacecraft missions like Cassini, Voyager, and Curiosity, it serves as a rich visual reference for space enthusiasts and students alike.
2026-07-07 VSNET - An Intensive International Mailing List on Variable Stars VSNET is an international mailing list network based at Kyoto University dedicated to real-time alerts and collaborative observation of variable stars, cataclysmic variables, novae, supernovae, and X-ray binaries. Hosting decades of light curve archives from AFOEV observations and ongoing amateur-professional collaboration campaigns, it serves as a serious citizen science hub for variable star astronomy worldwide.
2026-07-07 Wayne Hu Wayne Hu is a Professor of Astronomy and Astrophysics at the University of Chicago, and this site serves as his academic hub covering cosmology research including CMB polarization, baryon acoustic oscillations, cosmic shear, and large-scale structure. Visitors will find an impressive collection of tutorials, lecture notes, research codes, publications, and course materials spanning decades of work in theoretical cosmology.
