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://kb8vsr.tripod.com/index.html
Shane Worth, callsign KB8VSR, runs this General Class amateur radio personal site featuring sections on SSTV (slow-scan television), a logbook, ham radio links, and an introduction to what ham radio is. A classic old-web ham shack homepage with multiple navigation sections that give a solid overview of one operator's on-air activities.
https://mreclipse.com/
Fred Espenak, known as MrEclipse, is a renowned NASA astrophysicist who has dedicated this site to comprehensive solar and lunar eclipse resources, including photography guides, safety tips, and extensive photo galleries spanning from 1970 to the present. Visitors will find detailed previews of upcoming eclipses through 2040, firsthand accounts of totality, and stunning images captured across decades of eclipse-chasing expeditions.
http://briancoad.com/main.asp
Brian W. Coad, a retired ichthyologist from the Canadian Museum of Nature in Ottawa, shares decades of expertise through resources including a Dictionary of Ichthyology, annotated checklists of Canadian fishes, and detailed studies of freshwater fishes from Iran and Iraq. The site is a remarkable reference collection for anyone interested in fish taxonomy, zoogeography, and biodiversity, with content serious enough to be published as academic papers and books.
http://homingin.com/
Maintained by Joe Moell (K0OV) since 1988, Homing In is a comprehensive resource dedicated to radio direction finding, foxhunting, and amateur radio direction finding (ARDF) competitions worldwide. Visitors will find news about international championships, technical projects, equipment guides, event results, wildlife tracking applications, and a wealth of articles spanning decades of expertise in the hobby.
https://qsl.net/sidxa
The Swan Island DX Association is an informal club of amateur radio operators in the Raleigh, North Carolina area united by the pursuit of DX contacts and QSL card collecting. The site includes meeting details, member photos spanning multiple years at local restaurants, links to DX bulletins, and a history of the CIA clandestine radio station on Swan Island that inspired the club's name.
https://rmastro.com/
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.
http://ccas.us/
The Chester County Astronomical Society (CCAS) is a Pennsylvania-based non-profit bringing together amateur astronomers through monthly meetings, observing sessions, and public star parties for schools and civic groups. The site features an events calendar, member photography, planetarium show schedules at West Chester University, and resources for anyone interested in exploring the night sky.
https://planetary.chem.tufts.edu/Phoenix/index.html
A page dedicated to NASA's Phoenix Mars Scout Mission, hosted on a Tufts University chemistry server, featuring launch videos including a close-up NASA recording and a team footage from Cocoa Beach in August 2007. It offers a glimpse into the excitement surrounding the Phoenix lander's launch, which went on to study the Martian arctic soil.
http://zl2ctm.blogspot.com/
Charlie Morris (ZL2CTM) documents his amateur radio homebrew experiments on this technical blog, sharing detailed projects like a 40m Pelican Case SSB transceiver complete with Arduino code for LCD displays and Si5351 synthesizers. A great resource for ham radio enthusiasts interested in building their own transceivers and RF circuits from scratch.
https://observing.skyhound.com/
Observing at Skyhound is a long-running amateur astronomy resource from the creator of SkyTools 3, offering deep sky observing guides, comet chasing updates, monthly observing information, and a growing handbook of articles. Dating back to 1999, the site blends personal observing experience with practical tools and links for serious amateur astronomers.