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://xmlog.com/
XMLog is a free amateur radio logbook application for Windows, created by Michael McAmis (W1ECT), offering flexible log searching, awards tracking for DXCC, WAZ, and WAS, LoTW integration, and callbook lookups. The site serves as the official download and support hub for the software, with documentation, beta releases, and a linked community group on groups.io.
https://425dxn.org/
425 DX News is a long-running Italian weekly bulletin for serious DXers, founded in May 1991 and now past its 1800th issue, covering rare DX expeditions, contest calendars, and DX cluster updates. Produced by Mauro I1JQJ, Valeria IK1ADH, and a dedicated team of amateur radio operators, it serves the global ham radio community with bulletins, a searchable database, and a magazine.
https://w0ne.org/
The Winona Amateur Radio Club (WARC) is an ARRL-affiliated club based in Winona, Minnesota, founded in 1945 and serving local ham radio enthusiasts with repeaters, nets, and emergency preparedness resources. Visitors will find club news, event calendars, QSL card verification tools, a remote station, SKYWARN information, and membership details.
https://benholcomb.com/storm-chasing/links
Ben Holcomb's storm chasing hub features an extensive links directory connecting visitors to fellow storm chasers, meteorology resources, and severe weather organizations. With over 400 storm chasing posts logged and sections covering tornado videos, pictures, past chase statistics, and equipment, this is a serious enthusiast's personal record of years spent pursuing severe weather.
https://www.saao.ac.za/~wpk/astron.html
A comprehensive curated directory of astronomy links collected from mailing lists like ASTRO and HASTRO-L, covering everything from beginner stargazing tips to telescope making, satellite tracking, and the history of ancient calendars. Hosted on the South African Astronomical Observatory domain, this resource spans hundreds of links organized into detailed categories for amateur and serious astronomers alike.
https://reflector.org/
The Springfield STARS is an amateur astronomy club based in Western Massachusetts, holding monthly meetings at the Springfield Science Museum from September through May. Visitors can find astronomy articles, outreach events, and club meeting details, making it a welcoming hub for stargazers in the region.
https://sarts.org.sg/
The Singapore Amateur Radio Transmitting Society (SARTS) is the national organization for ham radio enthusiasts in Singapore, offering resources on licensing, frequency bands, and getting started with amateur radio. The site features news posts on topics like FreeDV signals, web SDRs, and satellite launches, along with a marketplace, gallery, and membership information for the local ham community.
https://jarcnd.com/ham-radio-links
The Jamestown Amateur Radio Club in North Dakota maintains this extensive alphabetical directory of ham radio links, covering clubs, contests, equipment, licensing, repeaters, and DX resources from across the country. With hundreds of curated links organized A to Z, it serves as a comprehensive jumping-off point for amateur radio operators at any experience level.
http://bobsknobs.com/
Bob's Knobs sells specialized collimation thumbscrews that let telescope owners align their Cassegrain and Newtonian telescopes without any tools. The product line covers knobs for popular telescope brands including Losmandy, Celestron, and TeleVue mounts, with custom sizing options and downloadable installation guides.
https://drisc.io/
Drisc.io is a personal blog and journal by a tech-minded creator who covers topics ranging from space exploration (KSC visits, Crew-12) to Apple ecosystem projects like iPadtop setups and a menu bar app called Peak Streak. The mix of journal entries, blog posts, and a wiki makes it a compact but genuine slice of one person's geeky interests and creative projects.