Science & Nature
1439 sites
Subcategories:
- Astronomy & Space (396)
- Chemistry (8)
- Earth Sciences (26)
- Biology (79)
- Physics (30)
- Mathematics (59)
- Weather & Climate (104)
- Amateur Radio (682)
- Electronics (47)
http://webmineral.com/
Webmineral is a comprehensive mineralogy database created by David Barthelmy, cataloging 4,714 individual mineral species with detailed descriptions, crystal structure viewers, X-ray data, chemical formulas, and an extensive image library. Its interactive Java-powered crystal viewers, searchable indexes across dozens of physical and optical properties, and multi-language support make it an invaluable reference for geologists, collectors, and mineral enthusiasts alike.
https://stormandsky.com/
Storm And Sky is a storm photography and weather resource featuring hundreds of photos of supercell storms, tornadoes, and other dramatic natural phenomena. Visitors can explore trip reports, tutorials, gear recommendations, stock images, and weather and space data, making it a destination for storm chasers and weather enthusiasts alike.
http://catawbasky.org/
The Catawba Valley Astronomy Club (CVAC) has been bringing amateur astronomy to North Carolina's Catawba Valley for 50 years, operating the Lucile Miller Observatory and hosting public stargazing events at parks, schools, and local venues. The site serves as the club's hub for event schedules, membership applications, officer listings, and clear sky charts for observers in the region.
https://m0rvb.uk/
The personal landing page for M0RVB, a licensed amateur radio operator whose callsign spells out Mike Zero Romeo Victor Bravo. The site links out to his radio blog, a KiwiSDR receiver, and his presence on mastodon.radio, making it a hub for his ham radio online activity.
http://polarimage.fi/
A Finnish sky photography site dedicated to atmospheric phenomena including aurora borealis and noctilucent clouds captured from the high latitudes of Finland. Visitors will find striking images of both day and night skies showcasing some of nature's most dramatic light displays.
https://softkittypa.ws/
Lexi's personal homepage blends astrophotography, programming projects, and game corruption experiments into a vibrant, technically impressive old-web-style showcase. Visitors can browse her astrophotography gallery, explore open-source tools she built, and see wild ROM corruption screenshots from titles like Mario Kart Wii and Celeste.
http://faqs.org/faqs/space
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.
https://k7su.com/
Kelly Klaas (K7SU) runs this personal hub covering amateur radio, handmade Morse code keys, woodworking, laser engraving, and voice-over work. The site serves as a launchpad to several distinct projects, with the handmade keys and ham radio content being the clear centerpiece.
https://astronomy-links.net/lifeonwanderingplanets.html
Clark M. Thomas presents a speculative essay on the possibility of life on wandering planets and dark solar systems, drawing on extremophile biology and decades of independent astronomical thinking. The piece weaves together astrophysics, astrobiology, and theology, touching on exoplanets, Europa, HIV research history, and UFOs as part of the author's idiosyncratic intellectual journey.
http://users.netonecom.net/~swordman/Radio/unun.htm
Doug's page details the hands-on construction and testing of an impedance-matching transformer (Unun) for connecting a 350-foot long-wire antenna to a shortwave receiver. Complete with photos of the wound toroid core, schematic references, and bandscanning results comparing performance with and without the transformer, it's a practical reference for anyone building receiving antenna accessories.