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://astronomy.net/
Astronomy.Net is a comprehensive hub for amateur and professional astronomers alike, offering articles, forums, constellation guides, sky event calendars, and equipment classifieds all in one place. Built and maintained by John Huggins since 1994, the site covers everything from telescope optics and astrophotography to meteor showers and planetary conjunctions.
https://mikedaub.com/
Mike Daub is a physics and mathematics educator with a master's from UC Berkeley who spent five seasons at the South Pole researching experimental cosmology on the ACBAR project. His personal site covers his academic background, libertarian politics, photography, and a no-nonsense hand-coded HTML philosophy with no frameworks or tracking.
https://panspermia.org/
Cosmic Ancestry is a deep-dive scientific resource exploring the theory of panspermia, arguing that life on Earth originated from space and that all evolutionary innovation depends on genetic material of cosmic origin. The site covers astrobiology, comets as delivery systems, interstellar dust, the work of Fred Hoyle and Chandra Wickramasinghe, and presents extensive evidence comparing Darwinism with the Cosmic Ancestry hypothesis.
https://jrm.phys.ksu.edu/Scouts/Space-AstroLinks.html
Compiled by Vincent Needham at Kansas State University, this extensive link directory covers virtually every corner of space and astronomy on the web, from advocacy groups and industry players to SETI projects and digital sky surveys. With over 270 curated links organized into categories like amateur rocketry, space missions past and future, telescopes, and planetary science, it serves as a thorough reference hub for space enthusiasts and researchers alike.
https://www.qsl.net/lz1iii/html/1001link.html
A massive curated directory of amateur radio links maintained by LZ2HM, covering everything from ARRL resources and antenna plans to SSTV, ATV, antique radios, aurora monitoring, and weather resources. With over 1,300 links organized into dozens of categories, it serves as a comprehensive reference hub for ham radio operators of all interests.
https://ciura.tripod.com/index.html
Steve (KB9JWD) is a ham radio operator and trained weather spotter from Downers Grove, Illinois who built this page to share his twin passions for amateur radio and meteorology. Visitors will find links to SKYWARN spotter gear, the QRZ callsign database, amateur radio practice exams, local radio club pages, and weather resources.
https://sandra.radio/
SANDRA (San Diego Repeater Association) is a 501(c)(4) non-profit amateur radio club based in San Diego, California, serving local ham radio operators with repeater listings, digital services, and club resources. The site offers member information, net schedules, a mailing list, meeting recordings, and operating guidelines for the regional amateur radio community.
http://echolink.org/
EchoLink is the home of a widely-used software platform that lets licensed amateur radio operators connect with each other worldwide via the internet using streaming audio technology. With over 350,000 validated users across 159 countries and apps available for Windows, Android, iOS, and web browsers, it is a cornerstone tool in the modern ham radio community.
http://n0hr.com/
N0HR.com is a hub for amateur radio operators, offering PocketPC ham radio software including MobileLog 2 for contact logging, PPCMorse for learning Morse code, and PocketDigi for digital modes like PSK31 and RTTY. The site also features a large curated and user-rated ham radio links directory, HF propagation tools, a DXPedition map, and a blog covering tower projects, contests, and DX activity.
https://qsl.net/wa5mc
The Atchafalaya Amateur DX Association Inc. (AADXA) is a ham radio club based in Amelia, Louisiana, with a full organizational presence including officer listings, membership applications, meeting minutes, newsletters, and repeater information. Developed by Guy R. Morrison (WA5MC), the site also features field day photos, a guestbook, and club constitution documents, making it a solid hub for local amateur radio enthusiasts.