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://www.qsl.net/dearg
The Driven Elements Amateur Radio Group (DEARG) is a Northeast Arkansas ham radio club operating under call sign KD5PXG, focused on 6 and 2 meter single sideband operation on 144.220 USB. The site serves as the club's web presence with sections for membership info, archives, and Sporadic E propagation news.
https://sidewalkastronomers.us/
The Sidewalk Astronomers are a public service amateur astronomy association founded in the tradition of John Dobson, dedicated to bringing telescopes directly to the public in parks, street corners, and busy public spaces. The site features event schedules, telescope plans, newsletters, international projects, and resources for local chapters around the world.
https://www.qsl.net/bharc
Hosted on QSL.net, this site belongs to BHARC, likely a local amateur radio club or ham radio organization based on the domain structure. The page uses frames, suggesting it contains club information, resources, or member content typical of ham radio community sites from the early web era.
https://izw1.caltech.edu/ACE
The official homepage for NASA's Advanced Composition Explorer (ACE) spacecraft, hosted at Caltech, providing mission data, instrument specifications, and real-time solar wind readings. Visitors can access browse plots, science publications, press releases about cosmic ray research, and data from nine onboard instruments measuring solar and galactic particle composition.
https://craq.club/
The Club Radio Amateur de Québec (CRAQ), founded in 1926 and celebrating its 100th anniversary, is one of Quebec's oldest amateur radio clubs, offering membership resources, technical articles, repeater information, QSL cards, and licensing exam preparation. The site includes live HF operation logs, contest schedules, D-STAR networking stats, and a rich archive of club activities and events.
https://weathercharts.org/
A comprehensive aggregator of meteorological charts covering the North Atlantic and Europe, pulling together synoptic analysis and forecast data from sources like UKMO, DWD, GFS, and FNMOC. Weather enthusiasts, sailors, and aviation buffs will find an extensive collection of MSLP charts, upper-air forecasts, wave height data, and model animations spanning up to 384 hours ahead.
https://qsl.net/w6ddx
The High Desert DX Association (HIDEXA) is an amateur radio club based in the High Mojave Desert of California, dedicated to DX (long-distance) radio communication. This page is a redirect notice pointing visitors to the club's new callsign and website location at W6EFB.
https://n2ty.org/
The Troy Amateur Radio Association is the official web presence for a ham radio club based in Troy, serving local amateur radio enthusiasts with club information and resources. A hub for the regional ham radio community, it connects operators interested in amateur radio activities, licensing, and club events.
https://lakeneosho.org/King1.html
Professor of Geology Norman R. King documents the Pennsylvanian-age rock exposure uncovered during I-170 highway construction in St. Louis, Missouri, with detailed photographs and technical discussion of the Altamont Formation. This site is a niche academic resource for geology enthusiasts and paleontologists interested in Carboniferous stratigraphy and fossils from the American Midwest.
http://momnpopsware.com/
Mom 'N' Pop's Software is a small family-run vendor based in Spring Hill, Florida, established in 1989, selling CD-ROM and DVD software with a heavy focus on Ham Radio titles alongside education, games, and utilities. Their free downloadable catalog includes a special Ham Radio edition featuring over 1000 shareware and freeware programs, making it a notable resource for amateur radio enthusiasts on a budget.