Astronomy & Space
396 sites
http://burtleburtle.net/bob/scifi/dyson.html
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.
https://astronomyedinburgh.org/
The Astronomical Society of Edinburgh has been sharing a love of astronomy since 1924, hosting hybrid in-person and online meetings, observing group sessions, and public talks several times a month. Visitors can explore sky diaries, knowledge articles, beginner observing lists, meteor camera data, and a Messier/Caldwell project archive alongside a live interactive solar system map.
http://blackcanyonastronomy.com/
The Black Canyon Astronomical Society (BCAS) is an amateur astronomy club serving Western Colorado, offering public meetings, star parties, dark sky preservation efforts, and outreach programs to schools and community groups. The site features a calendar of events, astrophotography gallery, observing highlights, and information on joining the Astronomical League.
http://astrophysical.org/
Astrophysical.org is a scientific popularization site run by Istituto Scientia, covering astrophysics and astronomy with sections on stars, magnitude, an online planetarium, and the SAO star catalog. Visitors can explore topics from stellar spectral classification to cosmology, with links to companion site Astrometry.org for celestial mechanics content.
http://astronomylinks.com/
astronomyLINKS is a comprehensive curated directory of over 1000 astronomy and space-related links organized into categories like astrophotography, black holes, deep-sky objects, telescopes, and astronauts. Running since 2002, it serves as a one-stop portal for amateur and professional astronomers seeking resources, news, software, and community connections from around the world.
https://soho.nascom.nasa.gov/data/realtime/realtime-update.html
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.
https://sostrata.neocities.org/sostratapersonal
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.
http://company7.com/
Company Seven is a long-established astro-optics retailer and resource hub based in Laurel, Maryland, serving both amateur and professional astronomers with telescopes, binoculars, rare optical instruments, and expert consultation. Notable for its involvement with NASA missions including the Hubble Space Telescope Repair and the James Webb Space Telescope, this site blends a brick-and-mortar showroom presence with a deep online resource for the astronomy community.
https://fourmilab.ch/solar/solar.html
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.
https://astroring.auroradynia.com/
The Astronomy Webring, hosted by auroradynia, connects enthusiasts of astronomy, astrophotography, and astrophysics across the old web. Visitors can join the ring, browse the member list, or simply hop between sites dedicated to all things space.