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://irlp.net/
The official home of the Internet Radio Linking Project (IRLP), a system that connects amateur radio repeaters around the world using Voice over IP technology. The site provides information, maps, node codes, frequencies, and technical details for ham radio operators looking to link into the IRLP network.
http://k6may.com/
The personal ham radio page of K6MAY, a licensed amateur radio operator whose callsign is registered on QRZ.com, featuring a live UTC clock display and imagery related to Collins radio equipment, railroads, biking, and modeling. The site blends the operator's ham radio identity with glimpses of other hobbies, making it a classic old-web shack page from the amateur radio community.
https://up-ship.com/Book/spaceshipdesign.htm
A work-in-progress book project aimed at giving science fiction authors and scriptwriters the real engineering and physics knowledge needed to design plausible spacecraft. The site outlines chapter topics ranging from propulsion systems and structures to weapons and re-entry, covering everything from chemical rockets to theoretical Alcubierre warp drives.
https://www.qsl.net/wb1asl
WB1ASL's personal ham radio page dedicated to vintage 'boatanchor' radio equipment, featuring Rich's own collection including a Hammarlund HQ-170 and a Lil' LuLu prototype. The site also curates shortwave listening links including Glenn Hauser's World of Radio and DXing resources for radio enthusiasts.
http://xastir.org/index.php/Main_Page
XastirWiki is the documentation hub for Xastir, an open-source APRS (Automatic Packet Reporting System) client that provides mapping, tracking, messaging, weather alerts, and Search & Rescue features over amateur radio and the internet. Built by contributors worldwide and licensed under the GNU GPL, Xastir supports multiple platforms and is a feature-rich tool for ham radio operators who rely on real-time digital packet reporting.
https://centexastronomy.org/
The Central Texas Astronomical Society operates Meyer Observatory and the Turner Research Station near Clifton, Texas, hosting public open houses and member star parties with large-aperture telescopes. Their mission spans stargazing outreach, astrophotography, astronomy education, and research for both newcomers and experienced observers in the Central Texas region.
https://www.qsl.net/w1aa/w1aa_1001.htm
Documenting the 2003 Marconi 100th Anniversary Special Event station operated by the Marconi Radio Club (W1AA) and the Marconi Cape Cod Memorial Radio Club (KM1CC) near the historic Cape Cod transmission site, this site captures a milestone commemoration that logged over 13,000 contacts worldwide. Highlights include a rare contact with the International Space Station and a presidential commemorative message from George W. Bush, making it a fascinating record of amateur radio history in action.
https://journal.jcampbell.ca/
Jim Campbell (VE1KM) keeps this personal journal documenting his amateur radio adventures, including Parks on the Air activations, balun testing, 3D-printed ham radio accessories, and Morse Code operating tracked via the Reverse Beacon Network. Live feeds of his recent QRZ contacts, POTA stats, and Mastodon posts make this a genuinely active ham radio log worth bookmarking.
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.
https://fy5ke.org/
FY5KE is the official site of the Radio Amateur Club de Kourou in French Guiana, a club known for participating in major international contesting events like CQ WW SSB and ARRL DX SSB dating back to 2000. Visitors can explore the club's station details, QSL information, 50 MHz beacon, and an extensive archive of contest results spanning nearly two decades.