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://nightskylive.net/
NightSkyLive.net appears to be a site dedicated to live or near-live views of the night sky, likely featuring sky cameras or astronomy broadcasts. The domain name strongly suggests a focus on real-time celestial observation for stargazers and astronomy enthusiasts.
http://nsminerals.atspace.com/
Created by Ronnie Van Dommelen, this site is a dedicated reference guide to the mineralogy of Nova Scotia, Canada, covering locality information, mineral images, species studies, and reported minerals from the region. It highlights the province's world-class zeolites, Bay of Fundy collecting sites, and serves as an online resource for mineral enthusiasts and collectors worldwide.
http://stars.astro.illinois.edu/sow/spectra.html
Jim Kaler's comprehensive guide to stellar spectra covers everything from absorption and emission lines to the Doppler effect and spectral classification, all richly illustrated with images of rainbows, nebulae, and spectrograms. Part of Kaler's broader STARS educational project hosted at the University of Illinois, this deep-dive reference explains how astronomers decode the physical and chemical nature of stars through the light they emit.
https://wh6ko.net/
Karen and Kevin's personal homepage chronicles their amateur radio adventures as licensed operators WH6CWD and WH6KO, originally from Hawaii and now settled in Oregon. The site blends ham radio content with personal memories, pet photos, and snapshots of Pacific Northwest life including multiple winters of notable snowfall.
http://astroverde.org/
Astroverde is the official website of the Astronomers of Verde Valley, an amateur astronomy club based in Northern Arizona's Verde Valley region. Visitors can browse member astrophotography galleries, find star party schedules, access observing tools, and learn how to join the club.
https://www.qsl.net/mid-islandarc
The Mid-Island Amateur Radio Club (MIARC) serves ham radio enthusiasts on Long Island, New York, with club info covering repeaters, membership applications, and Field Day photos. A community hub for local hams, the site also features a bulletin board, swap shop, and links to related resources including VE exam info and ARRL connections.
https://chemguide.co.uk/index.html
Chemguide, created by Jim Clark, is a comprehensive chemistry reference site aimed at helping students aged 14 through A-level understand topics ranging from atomic structure and bonding to organic reaction mechanisms and physical chemistry. Covering major UK exam syllabuses including GCSE, CIE Cambridge International, and Edexcel, it serves as an authoritative free study aid with deep topic coverage across all major chemistry disciplines.
https://www.qsl.net/fara
The Framingham Amateur Radio Association (FARA) ran this club hub for ham radio operators in the Framingham, Massachusetts area, featuring meeting schedules, flea market announcements, licensing events, and DX-pedition photos. A great snapshot of an active local amateur radio club from the early 2000s, complete with member callsigns, ARRL news feeds, and resources for newcomers seeking their first no-code license.
https://eskimo.com/~oolon/wwdxc
The Western Washington DX Club (W7DX) is a ham radio club based in the Pacific Northwest, offering members access to DX bulletins, contest calendars, propagation forecasts, QSL bureau info, and a newsletter called the Totem Tabloid. The site includes meeting announcements, officer rosters, club bylaws, and links to regional ham radio clubs and resources throughout the 7th call area.
https://500kc.com/
The 500 KC Amateur Radio Experimental Group, run by Ralph M. Hartwell II, documents the WD2XSH experimental station network operating in the 600-meter (500 kHz) band, including reception reports, station maps, frequency assignments, and FCC regulatory updates. A fascinating resource for low-frequency amateur radio enthusiasts, it captures the years-long effort by American hams to secure the new 630-meter band allocation from the FCC.