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)
https://www.qsl.net/w3sz
Roger Rehr's W3SZ page is a long-running amateur radio site hosted on QSL.net, active from 1997 to 2007. The callsign W3SZ and the QSL.net hosting strongly indicate a ham radio enthusiast's personal presence on the web.
http://astronautica.com/owds.html
Other Worlds, Distant Suns, maintained by Garber Astronautics, is a detailed catalog of extrasolar planets featuring individual pages for dozens of star systems like 51 Pegasi, Gliese 876, and upsilon Andromedae. The site stands out for its interactive VRML 3D visualizations of extrasolar systems, observing guides for both celestial hemispheres, and curated links to leading researchers like Geoff Marcy and Jean Schneider.
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://astropix.com/
Jerry Lodriguss has spent nearly 50 years photographing the night sky, and AstroPix collects his expertise into a comprehensive resource covering everything from smartphone star trails to deep-sky nebulas and total solar eclipses. Visitors will find equipment reviews, image processing tutorials, observing guides, and stunning astrophotos of planets, comets, galaxies, and celestial events spanning decades of film and digital work.
http://nd6t.com/
ND6T's site is a hands-on collection of simple amateur radio projects covering antennas, BITX transceivers, Microchip PIC gadgets, and test equipment tips. It's a practical resource for ham radio hobbyists looking for accessible DIY electronics builds with real-world workbench guidance.
https://pierplates.com/
Dan's Pier Top Plates is a small business site selling custom mounting hardware for backyard telescopes, including pier top plate systems, DIY telescope enclosures, and adapters for metal piers. Hobbyist astronomers looking to build a permanent concrete or metal telescope pier for a home observatory will find products, FAQs, and installation guides here.
https://electrochemeisbasics.blogspot.com/
Ivan Robayo's technical blog explores electrochemical systems through simulation and modeling, covering topics like cyclic voltammetry, biosensors, ohmic resistance, and the Belousov-Zhabotinsky reaction. Posts combine physical chemistry theory with computational tools like R, deSolve, and Shiny to make complex electrochemical concepts accessible and interactive.
http://aoas.org/
AOAS (Amateur Observers' Astronomical Society) is a club website for astronomy enthusiasts, likely featuring meeting information, observing events, and resources for stargazers. The domain and structure suggest a regional astronomy club serving members interested in telescopes, sky-watching, and community observing sessions.
https://www.qsl.net/w4amc
The Brightleaf Amateur Radio Club (BARC) of Greenville, NC maintains this hub for club members and ham radio enthusiasts, featuring meeting info, membership rosters, newsletters, and emergency preparedness resources. With callsigns W4AMC, W1VOA, and W4UHS, the club covers everything from Skywarn weather spotting to DX activity links and real-time solar data.
https://1x1callsigns.org/
A dedicated resource for amateur radio operators looking to reserve FCC-authorized one-by-one (1x1) special event call signs for conventions, festivals, and other community celebrations. The site includes an FCC regulations guide, a searchable 1x1 callsign database, coordinator listings, and a reservation request system for temporary station operation.