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/pslara
The Port Saint Lucie Amateur Radio Association (PSLARA) is an ARRL-affiliated club serving licensed ham radio operators and enthusiasts in Port Saint Lucie, Florida. The site covers club meetings, repeater frequencies, emergency communications services, licensing classes, and VE testing sessions.
https://arca-az.org/
The Arizona Repeater Council of Arizona (ARCA) appears to be an organization coordinating amateur radio repeater operations across the state of Arizona. The site uses frames-based navigation, suggesting an older web presence dedicated to ham radio coordination and regional repeater management.
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.
http://okie-tex.com/index.php
The Okie-Tex Star Party is an annual astronomy event held at Camp Billy Joe in the Black Mesa area of Oklahoma, offering some of the darkest skies in the Southwest for stargazers. The site covers everything attendees need, including registration, event schedules, observing lists, meal menus, accommodation info, and a photo gallery from past gatherings.
https://fcrosby.com/ears
A historical archive of the Englewood Amateur Radio Society, preserving records and activities from 1999 to 2017. The site serves as a digital repository for this local ham radio club's legacy, offering a rare glimpse into nearly two decades of amateur radio community organizing.
http://wd5gnr.com/
WD5GNR is a ham radio operator and electronics enthusiast who shares a wealth of resources on microcontrollers, Basic Stamp and PIC projects, 68HC11 tips, and homebrew electronics. The site features free online tutorials, monthly projects, gadget reviews, electronics calculators, and links to parts suppliers, making it a genuine hub for hobbyist engineers and radio operators.
http://w0abr.com/
The Hub City Amateur Radio Club (W0ABR) serves the Aberdeen, South Dakota area with regular club meetings, nets, and informal coffee gatherings for ham radio enthusiasts. The site lists upcoming events, links to local APRS activity and weather resources, and connects members to the ARRL and regional repeater networks.
https://skymarvels.com/
SkyMarvels is an astronomy education site that guides visitors through the night sky and solar system using interactive animations, videos, and the free 3-D simulation software Celestia. Covering everything from individual planets and moons to deep-sky objects and the scale of the cosmos, the site offers a genuinely immersive experience suitable for beginners and enthusiasts alike.
https://hc2ae.tripod.com/
HC2AE is a Spanish-language ham radio hub created by an amateur radio operator in Guayaquil, Ecuador, serving as a meeting point for Latin American radioaficionados. The site features a Guayaquil callbook searchable by callsign or name, DX information, contest listings, propagation resources, software links, and a chat and forum for the ham radio community.
http://blackcanyonastronomy.com/
The Black Canyon Astronomical Society (BCAS) is an amateur astronomy club serving Western Colorado, offering public meetings, star parties, dark sky preservation efforts, and outreach programs to schools and community groups. The site features a calendar of events, astrophotography gallery, observing highlights, and information on joining the Astronomical League.