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://owlsp.com/
Wesley Luginbyhl's storm chasing archive spans over two decades of tornado outbreaks, supercells, and severe weather events across Texas, Oklahoma, Kansas, and beyond. Packed with chase accounts organized by date and location, plus landscape photography, aurora shots, and live chase cam resources, this site is a compelling record of life on the storm-chasing circuit.
http://gars.club/
The Gainesville Amateur Radio Society (GARS) is a club based in Gainesville, Florida, offering meeting schedules, repeater information, FCC license testing details, and resources for local ham radio enthusiasts. The site covers everything from Morse code history and VOIP for amateurs to club bylaws, awards, and a photo gallery of past activities.
https://castfvg.it/galassie/indexgal.htm
An extensive galaxy catalog reference compiled by the Circolo Astrofili Talmassons (C.AS.T.), an Italian astronomy club, featuring member-photographed images organized across major catalogs including NGC, UGC, IC, PGC, Messier, and VCC. The site covers thousands of galaxies alongside deep sky objects, quasars, and galaxy clusters, making it a remarkable visual archive built collaboratively since 1996.
https://fossilguy.com/
Run by Jayson Kowinsky, FossilGuy.com is a comprehensive guide to fossil hunting and paleontology featuring field trip reports, fossil identification sheets, prehistoric animal profiles, and interviews with professional paleontologists. With content spanning from Megalodon teeth to trilobites to dinosaur news, it's a richly detailed resource for both amateur collectors and serious paleo enthusiasts.
http://sk3bg.se/contest
SM3CER Contest Service, run by Jan-Eric Rehn of Sweden, is a comprehensive hub for amateur radio contesters featuring a worldwide contest calendar, contest rules, results, and software links. Active since 1997, the site aggregates mailing lists, DX spotting tools, callsign lookups, and contest-related resources that make it an indispensable reference for serious ham radio operators.
https://k5sar.com/
The Shreveport Amateur Radio Association (K5SAR) is an ARRL Special Service Club based in Northwest Louisiana, founded in 1978 and serving over 120 licensed ham radio operators of all ages and experience levels. The site covers club membership, public service events, SKYWARN severe weather communications, hamfests, license exam resources, and local repeater information.
http://icstars.com/HTML/SolarSection/HAlpha/OBSERVINGTHESUNHAlpha1.html
David Knisely's comprehensive H-Alpha handbook covers solar observation in remarkable technical depth, with dedicated sections on prominences, sunspot group classification, solar flares, and a full glossary of H-Alpha terminology. Part of the larger ICSTARS Astronomy site, this resource is a serious reference for amateur astronomers interested in observing the sun through hydrogen-alpha solar filters.
https://www.qsl.net/paara
The Palo Alto Amateur Radio Association (PAARA) maintains this club homepage listing meeting times, net schedules, and operating award details for their active weekly net on the W6APZ repeater. A snapshot of early 2000s ham radio club life in the San Francisco Bay Area, complete with a newsletter archive and contact information for local members.
https://illinoiswildflowers.info/
Created by Dr. John Hilty, Illinois Wildflowers is a comprehensive botanical reference covering prairie, woodland, wetland, savanna, and weedy wildflowers native to Illinois, complete with plant-feeding and flower-visiting insect databases. The site's depth is remarkable, extending beyond flora to include vertebrate animal interactions, botanical and ecological terminology, and detailed photo documentation built over nearly two decades.
https://tapr.org/
TAPR (Tucson Amateur Packet Radio) is a longstanding amateur radio organization focused on advancing digital communications technology for ham radio operators. The site hosts decades of Digital Communications Conference papers, open hardware licenses, packet radio resources, and membership services for experimenters pushing the boundaries of amateur radio technology.