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://qth.com/sos
The Sultans of Shwing is the group page for ham radio operators Mike K9NW, Chad WE9V, and Scott KA9FOX, centered around their legendary annual parties at the Dayton Hamvention stretching back to 1995. The site features years of party photos, links to contesting and DX resources, and the irreverent humor of the ham radio contest community.
https://www.qsl.net/ve3fcg
The Festival City Amateur Radio Club (FCARC) serves amateur radio operators in the Stratford, Ontario area, listing their linked repeater system frequencies, IRLP node details, and APRS information. The site also offers a beginner's guide to ham radio, club information, and a curated collection of links for other hams including callsign search tools and dealer listings.
http://oscarmn.org/
The Owatonna Steele County Amateur Radio club (OSCAR) serves ham radio enthusiasts in Owatonna, Minnesota, with resources including repeater info, EchoLink access, a club store, and emergency service coordination. The site lists club officers, monthly meeting details, licensing classes, and links to ARRL, SKYWARN, and local emergency management organizations.
https://ei5di.com/
Paul O'Kane EI5DI offers SD, a free and actively maintained contest logging software for amateur radio operators running on Windows and Linux. The site also features Paul's personal commentary on ham radio topics, DXpedition stories, and resources like DXCC country files and Super Check Partial databases.
https://pages.astro.umd.edu/~mcmiller/nstar.html
Professor M. Coleman Miller of the University of Maryland shares an in-depth educational resource on neutron stars, covering topics from formation and internal structure to pulsars, X-ray bursters, and gamma-ray bursts. The page blends academic rigor with accessible writing, including links to pedagogical reviews, Q&A sections, and visual aids that make complex astrophysics approachable.
http://eclipsechaser.com/
Jeffrey R. Charles runs this comprehensive resource dedicated to total solar eclipses, featuring expedition journals, astrophotography galleries, equipment guides, and umbral data from eclipses dating back to 1979. Winner of the Griffith Observatory Star Award, the site covers everything from eclipse chasing expeditions to optics and accessible telescope guides.
https://in-the-sky.org/
Created by Dominic Ford, In-The-Sky.org is a richly detailed astronomy portal offering real-time night sky guides, interactive planetarium tools, satellite tracking, and event calendars for celestial phenomena like eclipses, conjunctions, and meteor showers. Visitors can explore 3D solar system maps, rising and setting times for planets, deep sky object catalogs, and even printable planispheres and astrolabes, all tailored to their geographic location.
http://capitalastronomers.org/
The National Capital Astronomers is a Washington D.C. metro area nonprofit astronomy club founded in 1937 at the US Naval Observatory, offering monthly star talks, public telescope events at Rock Creek National Park, and science fair outreach programs. Members and visitors can find meeting lecture videos, telescope-making workshop info, stargazing tips, and membership details for this long-running amateur astronomy society.
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.
https://amateurradio.com/
AmateurRadio.com is a long-running international hub for ham radio news, opinion, and technical discussion, celebrating over 29 years of service to the amateur radio community. Visitors will find podcast episodes, project write-ups on D-Star beacons and digital modes, equipment reviews, and community news covering topics from FT8 to MFJ Enterprises.