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/iz7ath/web/02_brew/brew_eng.htm
IZ7ATH's homebrew section is a treasure trove of DIY amateur radio projects covering antennas, RF devices, shack accessories, and test instruments. Visitors will find detailed build guides for cubical quads, delta loops, linear amplifiers, baluns, antenna rotators, and beginner soldering tutorials all in one place.
https://contesting.com/
Contesting Online is a hub for amateur radio operators passionate about radio sport and contesting, offering news, articles, contest schedules, mailing list archives, and product reviews. Part of the eHam.net network, it brings together a community of contesters with resources like the Contester Lookup, classified ads, and links to major contest logging software mailing lists.
https://qsl.net/wa5mc
The Atchafalaya Amateur DX Association Inc. (AADXA) is a ham radio club based in Amelia, Louisiana, with a full organizational presence including officer listings, membership applications, meeting minutes, newsletters, and repeater information. Developed by Guy R. Morrison (WA5MC), the site also features field day photos, a guestbook, and club constitution documents, making it a solid hub for local amateur radio enthusiasts.
http://meteorite-identification.com/
Meteorite-identification.com helps enthusiasts and beginners distinguish genuine meteorites from 'meteor-wrongs,' offering identification tests, case studies of misidentified specimens, and commentary on media coverage of meteorite claims. The site also covers meteorite collecting as a hobby, with guidance on buying specimens and evaluating suspect auction listings on eBay.
http://australiasevereweather.com/
Maintained by storm chasers Michael Bath and Jimmy Deguara, Australia Severe Weather is a comprehensive archive of severe weather photography, storm chasing reports, tornado and waterspout pictures, and tropical cyclone tracking maps covering Australian weather events. With over 35,000 photographs, timelapse webcam videos, flood history records, and storm chasing news, it serves as a serious reference for anyone fascinated by extreme Australian weather.
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://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.
http://lmars.org/
The Lake Monroe Amateur Radio Society (LMARS) is a ham radio club serving Seminole County and Central Florida, offering members resources like repeater information, a traffic net guide, licensing support, and a newsletter archive dating back to 2009. The site connects hams through regular meetings, fox hunts, Field Day operations, and community communications events, making it a solid hub for local amateur radio enthusiasts.
http://athensarc.org/
The Athens Amateur Radio Club (AARC) of Athens, Texas maintains this site as the hub for local licensed ham operators, featuring repeater information, meeting schedules, emergency preparedness resources, and ARES/NTS documentation. Built and maintained by Harold Melton KV5R, the site also includes links to area repeaters, scanner frequencies, Skywarn weather integration, and a membership roster.
http://stormchaser.ca/Stormchaser.html
George Kourounis is a globe-trotting storm chaser, explorer, and TV presenter whose site showcases breathtaking photographs and videos of tornadoes, hurricanes, volcanoes, lightning, and other extreme natural phenomena from all 7 continents. Best known for hosting the 'Angry Planet' TV series broadcast in over 100 countries, his online home is a stunning archive of close encounters with Earth's most violent forces.