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://lists.contesting.com/_3830
The 3830 mailing list archives preserve decades of amateur radio contesting discussion, spanning from 1996 through 2023. Operators and contesters can browse monthly threads or search the full archive to find score postings, contest strategies, and community conversation going back nearly 30 years.
https://ciechanow.ski/moon
Bartosz Ciechanowski's deep-dive interactive article on the Moon covers everything from its orbital mechanics and phases to tides, eclipses, craters, and gravitational effects, all brought to life with stunning real-time 3D simulations and draggable visualizations. One of the most richly illustrated and technically impressive science explainers on the web, it invites readers to genuinely experience lunar concepts rather than just read about them.
https://radio-astronomy.org/
The Society of Amateur Radio Astronomers (SARA) is a membership organization dedicated to the practice and promotion of radio astronomy among hobbyists, students, and educators. The site offers a wealth of resources including a peer-reviewed journal, educational guides for getting started, student grant programs, project sections, and details about annual conferences held across the United States.
https://k3lr.com/
K3LR is the homepage of Tim Duffy's world-class amateur radio contest station, featuring a multi-operator, multi-transmitter setup that has been featured in QST, RadCom, and the Spectrum Monitor. The site showcases Team K3LR's competition activities, sponsored equipment from Icom and DX Engineering, and links to Dayton Contest University events.
https://www.radioing.com/
Radioing.com, created by Charlie Bautsch (W5AM), is a sprawling amateur radio network covering everything from licensing guides and RF calculators to virtual museums of classic Collins Radio equipment and vintage transceivers. With over 4,000 ham radio links, callsign search tools, Morse code resources, classified ads, and a remote station, this site is a comprehensive hub for both newcomers and seasoned hams.
https://rochesterastronomy.org/snimages
Bright Supernova, maintained by David Bishop, is a dedicated tracking resource for bright supernovae observations and images. This redirect page points to a larger archive at RochesterAstronomy.org, suggesting a substantial collection of supernova data and imagery for amateur and professional astronomers alike.
http://www.hawastsoc.org/
The Hawaiian Astronomical Society, founded in 1949, is a nonprofit dedicated to promoting amateur astronomy across Hawaii through monthly public star parties, school outreach, and members-only dark sky observing sessions. The site features a deep sky atlas, an astronomy newsletter, event schedules, and live solar imagery from SDO, making it a rich hub for stargazers in the islands.
https://www.qsl.net/ai4hb
The Fort Knox Amateur Radio Club (FKARC) serves ham radio enthusiasts in the Fort Knox, Kentucky area, with a focus on DX operations, ARES emergency communications, and VE licensing exams. Visitors will find club meeting schedules, repeater information, constitution and bylaws, J-pole antenna plans, and a broad collection of ham radio links.
https://feis-crs.org/feis
The Fire Effects Information System (FEIS) is a U.S. Forest Service database providing detailed scientific syntheses on fire ecology, fire regimes, and the effects of fire on plant and animal species across the United States. Visitors can explore species profiles, vegetation crosswalks, tree distribution maps, and research publications covering ecosystems from ponderosa pine forests to Sonoran desert scrub communities.
https://kasonline.org/
The Kalamazoo Astronomical Society (KAS) is the oldest astronomy club in Michigan, welcoming members of all skill levels from casual stargazers to experienced observers. The site offers monthly downloadable all-sky star maps, membership information, and meeting schedules for those looking to explore the night sky with a community.