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://weather.ral.ucar.edu/upper
RAL Real-Time Weather's Upper-Air page, maintained by NCAR's Research Applications Laboratory, provides real-time rawinsonde plots and upper-atmosphere wind and temperature data across multiple pressure levels from 925mb to 200mb. Researchers and weather enthusiasts can browse SkewT/LogP charts, loop multi-day animations, and access archived upper-air data sponsored by the NSF National Center for Atmospheric Research.
https://ai5.mx/
Michael Burkhardt (AI5MX) runs this personal ham radio blog covering gear reviews, operating logs, QSL cards, Morse code adventures, and FCC news. Visitors will find mirrored Mastodon microposts, downloadable resources, and a genuine indie-web spirit connecting the amateur radio community.
https://vvara.org/
The Verde Valley Amateur Radio Association (VVARA) serves ham radio enthusiasts in North-Central Arizona, hosting regular club meetings, training presentations, and multiple weekly nets including trivia and rag chew sessions. The site also features a live weather station and camera feed from Mingus Mountain, making it a useful local hub for both radio operators and weather watchers.
http://aerith.net/index.html
Seiichi Yoshida's comprehensive comet resource site offers extensive catalogs, weekly bright comet updates, light curves, and thousands of photographs tracking comets from around the world. Yoshida is a notable amateur astronomer who even had a minor planet named after him, and his MISAO project leverages global imagery to detect and track remarkable astronomical objects.
http://www.berksastronomy.org/
The Berks County Amateur Astronomical Society (BCAAS) is a Pennsylvania-based astronomy club hosting monthly meetings, star parties, and online AstroHangouts via Zoom for space enthusiasts. The site features clear sky clocks for local observing sites including Pulpit Rock Astronomical Park and Carpenter Observatory, plus a club newsletter called Pegasus.
https://grace.umd.edu/~tlaloc/archastro
The official web presence of the Center for Archaeoastronomy, a professional research organization founded at the University of Maryland in 1978, dedicated to the interdisciplinary study of astronomy in ancient and indigenous cultures. Visitors can explore peer-reviewed publications, newsletters, essays on ethnoastronomy, and learn about ISAAC, the international society promoting archaeoastronomy worldwide.
http://polar-electric.com/
Polar Electric offers MRP40, a German-language amateur radio software suite that decodes and encodes Morse code signals using a computer soundcard as the audio interface. The site also provides several free companion tools including a mini logbook, DTMF decoder and encoder, Morse tone encoder, and a TeleType modem program for text transmission over radio.
https://qth.com/ka9fox
Scott Neader KA9FOX runs this long-standing ham radio site out of La Crosse, Wisconsin, focused on contesting and DXing with resources like contest score rumors, QSL info, DX bulletins, and mailing list summaries. Featured in QST Magazine, RSGB Radio Communication, and numerous other publications, this site has been a go-to hub for contesters and DXers since April 1995.
https://w3pie.tripod.com/
The W3PIE Uniontown Amateur Radio Club has held amateur status since 1938, making it one of the longer-running ham radio clubs in the region. This Tripod-hosted page serves as a redirect to the club's newer domain at w3pie.org, with minimal content beyond the forwarding notice.
https://afvl.li/
The Amateurfunk Verein Liechtenstein (AFVL) is the official amateur radio club of Liechtenstein, founded in 1986 and serving operators in the HBØ callsign region. The site covers club activities, DMR and FM repeaters, WinLink access, emergency communications, AREDN mesh networking, and upcoming events like POTA outings and monthly meetups.