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://currentsky.com/
Bob Riddle's 'Qué tal in the Current Skies' is a long-running amateur astronomy site that began in the late 1980s as posts to the Big Sky Telegraph BBS and evolved over 30+ years into a web resource covering Earth and Space topics. The site now serves as a transitional landing page pointing visitors to his continuing work on Substack, with archived daytime and nighttime sky photos, calendar data, and astronomical observations.
https://mnyarc.org/
MNYARC, the Minnesota Youth Amateur Radio Council, is a non-profit 501(c)3 organization dedicated to sponsoring and supporting youth-oriented amateur radio clubs and activities. The site covers events like JOTA, Skywarn Recognition Day, Girl Scout Jamboree participation, online VE licensing exams, and ham radio science projects for young operators.
https://eclipse.gsfc.nasa.gov/SEgoogle/SEgoogle2001/SE2017Aug21Tgoogle.html
Fred Espenak's NASA Eclipse Website hosts an interactive Google Maps tool showing the precise path of totality for the August 21, 2017 total solar eclipse, including central line, northern and southern limits, and 10-minute interval markers. Hosted by NASA's Goddard Space Flight Center, the page provides detailed data on greatest eclipse, greatest duration, lunar limb profiles, and eclipse weather resources.
http://audible.transient.net/archive
The Music Electronics µArchive is a long-running reference hub for DIY guitar effects and audio electronics, offering schematics archives, FAQs, and curated links to the best resources on the web. Highlights include a downloadable schematics archive, guides on tube amplifiers and transistor identification, and an Electro-Harmonix parts sheet for builders working with vintage pedal components.
https://www.qsl.net/smarc
SMARC (Sparks Mountain Amateur Radio Club) is a 501(c)(3) nonprofit amateur radio club featuring meeting announcements, a club magazine called SMARC Sparks, and resources including a Hamfest schedule and Arduino class materials. The site serves as a hub for local ham radio enthusiasts with links to reference files, useful ham radio resources, and club news from the president's shack.
http://members.chello.at/natura/shrew/index.html
Created by Werner Haberl, this scholarly hub is dedicated entirely to the biology of shrews (Soricidae), featuring a bibliography, photo gallery, newsletter, congress announcements, and a forum for zoologists worldwide. Awarded 'Coolest Science Site' in 1996 and mentioned in BBC Wildlife Magazine and Encyclopedia Britannica Online, it remains a remarkably deep and specialized resource for both researchers and curious naturalists.
https://sera.org/
SERA, the Southeastern Repeater Association, is the largest amateur radio repeater coordinating organization in the United States, serving ham radio operators across Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia. The site provides frequency coordination resources, band plans across multiple frequency ranges, a coordinated repeater database, and membership information for licensed amateur radio operators in the Southeast.
https://qsl.net/ik1hgi/atv.htm
A personal amateur radio page from Italian ham operator IK1HGI, covering ATV (amateur television) and low-frequency 472kHz QRP operation. The site touches on antennas, dipoles, and radio towers, offering a glimpse into the operator's station and technical interests.
https://wb4aej.com/hamdomain
WB4AEJ's Ham Domain is a comprehensive amateur radio resource built around a massive directory of ham radio operator websites, organized by callsign. Beyond the directory, the site covers special events stations, callsign lookups, fox tone sequences, and links to major organizations like ARRL, AMSAT, and TAPR.
https://www.qsl.net/k/kb7tbt//links
KB7TBT's ham radio links page is a well-organized curated directory of amateur radio resources spanning personal ham pages, local and national clubs, ATV groups, email forums, repeater councils, and commercial outlets. Created in 1998 and maintained through 2013, it serves as a comprehensive jumping-off point for hams interested in Arizona-area radio activity as well as broader national amateur radio communities.