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://garc.org/
GARC appears to be the homepage of an amateur radio club, serving as a hub for members and enthusiasts interested in ham radio activities and local club news. Sites like this typically feature club information, licensing resources, meeting schedules, and links to radio-related events and organizations.
http://k1hk.org/
K1HK is the callsign-based homepage of an amateur radio operator sharing their ham radio activities and interests. The site reflects the classic old-web style of hobbyist operators who built personal pages around their callsign and on-air pursuits.
http://messier.seds.org/
The SEDS Messier Database is a comprehensive reference for all 110 objects in Charles Messier's famous catalog of nebulae, star clusters, and galaxies, compiled by the French astronomer between 1758 and 1782. Visitors can browse detailed entries with images, follow Messier Marathon news and results, and explore deep sky objects organized by type, making this a go-to resource for amateur astronomers worldwide.
https://workbench.libsyn.com/hrwb-258-morse-code-bug-emulator-with-don-wb9cyy-and-bob-wo6w
Ham Radio Workbench is a podcast and blog dedicated to the maker and experimenter side of amateur radio, covering topics from PCB design and microcontrollers to vintage keys and SDR. This episode features Don WB9CYY and Bob WO6W discussing their ingenious Morse code bug emulator that gives modern paddles the organic, imperfect feel of classic mechanical telegraph keys.
http://skymaps.com/
Skymaps.com, created by Kym Thalassoudis, offers free monthly sky maps and star charts in PDF format to help amateur and professional skywatchers explore constellations, planets, and comets. The site also features a curated store with planispheres, star atlases, telescopes, and astronomy books for all skill levels.
https://w1cdn.net/
W1CDN documents ham radio adventures with hands-on technical posts covering packet radio, homebrew builds, APRS digipeaters, and radio orienteering projects. The site features detailed notes on software configurations like direwolf and flrig, DIY hardware builds including a powered speaker and homebrew power meter, and practical guides for operating on various bands.
http://scarc.com/
SCARC appears to be the website for an amateur radio club, offering resources and information for ham radio enthusiasts in its region. Club-based amateur radio sites like this typically feature member info, repeater details, licensing resources, and local on-air event announcements.
https://britastro.org/useful-links
The British Astronomical Association, supporting amateur astronomers since 1890, maintains this curated directory of useful links covering UK astronomy societies, observing resources, and related organizations. Visitors will find connections to groups like the Society for Popular Astronomy, the Federation of Astronomical Societies, and many more resources spanning the full breadth of amateur astronomy.
https://museum.state.il.us/exhibits/mazon_creek/about_mazon_creek.html
An educational exhibit from the Illinois State Museum exploring the famous Mazon Creek fossil deposits, dating back approximately 300 million years to the Pennsylvanian Period. Visitors can browse detailed pages on specific plant and animal fossils found in ironstone concretions, learn about the Francis Creek Shale formation, and explore why this site is considered one of the world's premier Lagerstätten.
https://solarviews.com/eng/mars.htm
Calvin J. Hamilton's comprehensive Mars reference page covers everything from the planet's geology and atmosphere to its moons, polar regions, and exploration missions like Viking, Pathfinder, and the Mars Rovers. Packed with images, animations, 3D galleries, and scientific articles, it serves as a deep-dive educational hub for anyone fascinated by the Red Planet.