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://physics.weber.edu/carroll/Wonder/extinctions.htm
A focused educational page from Weber State University exploring the history of mass extinctions, covering all five major extinction events across 600 million years of Earth's history. Complete with graphs, fossil imagery, and detailed descriptions of each extinction's causes and casualties, it makes paleontological science accessible and visually engaging.
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://moonconnection.com/
MoonConnection.com is a comprehensive lunar reference covering moon phases, eclipses, Apollo missions, tides, and the moon's gravitational effects, complete with interactive tools and a monthly phases calendar. It also offers practical guides on fishing, hunting, and night photography by moon phase, plus companion mobile apps for tracking lunar cycles on the go.
https://n3vem.com/blog
N3VEM is Vance Martin's ham radio blog covering repeater projects, AREDN mesh networking, antenna builds, and special event stations like the CQ Salk activation. The site documents ongoing technical projects including the Radio Rocket and r4e repeater builds, with posts spanning portable operations, field day, and POTA activities.
https://thespacewriter.com/wp
The Spacewriter's Ramblings is the astronomy blog of C.C. Petersen, a science writer who covers space exploration, cosmology, black holes, galaxies, and missions like New Horizons with nearly 900 posts of accumulated content. From stargazing tips to in-depth commentary on NASA controversies, this site blends accessible writing with genuine scientific enthusiasm and a contributor role at Universe Today.
http://edsradio.com/
Ed's Radio (AA6ED) is a comprehensive amateur radio resource focused on the Greater Los Angeles Area, covering local clubs across four counties, VHF/UHF nets organized by day, licensing exams, and swap meets. The site also includes educational content on basic electronics, Morse code, Q codes, and band plans, making it a handy reference for both new and experienced hams in Southern California.
https://flintriverastronomy.org/
The Flint River Astronomy Club (FRAC) is a Georgia-based astronomy club serving the Griffin area, hosting monthly meetings, public observing events at Indian Springs State Park, and club observing weekends at Joe Kurz WMA. Members have access to observing lists, tools, national awards, newsletters, and articles, making this a well-rounded hub for amateur astronomers in the region.
https://pskreporter.info/pskmap.html
PSKReporter is a real-time propagation mapping tool that aggregates reception reports from amateur radio operators worldwide, showing who is hearing whom across bands and digital modes like FT8, JT65, and PSK31. Created by Philip Gladstone, the interactive map lets operators filter signals by callsign, country, grid square, mode, and time window, making it an invaluable tool for monitoring radio propagation conditions.
https://las-skycamp.org/
The LAS Equinox Sky Camp is the UK's largest star party, bringing hundreds of amateur astronomers together for a week of dark-sky observing at Kelling Heath Holiday Park on the North Norfolk coast. The site covers event logistics, pitch booking advice, vendor trade stands, talks, and links to associated astronomy societies and suppliers.
http://skccgroup.com/
The Straight Key Century Club (SKCC) is a worldwide organization dedicated to CW (Morse code) enthusiasts who use traditional straight keys, bugs, and side-swiper keys on the air. With nearly 31,000 members and a rich program of sprints, awards, sked pages, and beginner resources, it is one of the largest and most active amateur radio clubs focused on traditional hand-keying.