Astronomy & Space
396 sites
https://astropublishing.com/
Astro Publishing offers a free multilingual astronomy magazine available to read and download in full, with a mission to bring astronomy culture to the widest possible audience. All issues can be accessed directly from the site, which is notable for its strict no-tracking, no-cookie privacy policy.
https://whatcomastronomy.org/
The Whatcom Association of Celestial Observers (W.A.C.O.) is a community astronomy club founded in 1988 in Bellingham, Washington, dedicated to making amateur astronomy accessible and enjoyable. The site offers a calendar of meetings, member resources, observing programs, photos, and local astronomy links for the Pacific Northwest region.
https://umbra.nascom.nasa.gov/eclipse/980226/text/filter-sources.html
Part of NASA Reference Publication 1383, this page provides a curated list of U.S. vendors selling mylar and glass solar filters safe for eclipse and solar viewing with or without a telescope. It includes contact details for well-known optics companies like Celestron, Meade, and Orion, making it a practical companion resource for amateur astronomers preparing for solar observation.
http://sten.astronomycafe.net/the-astronomy-cafe
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.
http://curiousskywatcher.blogspot.com/
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.
http://deepskystacker.free.fr/english/index.html
DeepSkyStacker is a free software tool designed for astrophotographers who want to stack and process deep-sky images to reveal faint celestial objects. The site offers downloads, screenshots, a user manual, FAQ, technical details, and tutorials for getting the most out of the application.
https://thecosmarnaut.neocities.org/
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.
http://astro.vaporia.com/start/transientastronomy.html
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.
https://arpgalaxy.com/
A comprehensive amateur astronomy resource dedicated to Halton C. Arp's Atlas of Peculiar Galaxies, cataloging all 338 peculiar and interacting galaxy entries with supporting data, imagery, and observing guidance. Built by and for amateur observers, the site bridges professional archival photography from the Palomar 200-inch telescope with modern amateur CCD imaging to show that anyone with a backyard telescope can observe these remarkable objects.
https://iceinspace.com.au/
IceInSpace is the largest online amateur astronomy community in the Southern Hemisphere, serving over 20,000 registered members across Australia, New Zealand, and South America. The site features astronomy forums, equipment reviews, DIY projects, astrophotography galleries, event reports, and an astronomy glossary tailored to southern hemisphere observers.