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://umass.edu/rso/hamradio
The official homepage of the UMASS Amateur Radio Club (callsign W1PUO), a student-run club at the University of Massachusetts Amherst founded in 1996 by College of Engineering students. The club offers a shared radio shack, licensing classes for prospective hams, and public service events open to all five-college university students, faculty, staff, and their families.
http://sten.astronomycafe.net/the-astronomy-cafe
NASA scientist-educator Sten Odenwald has maintained this astronomy education hub for over 20 years, filling it with popular essays on cosmology, black holes, space travel, and the weird corners of nature. Visitors will find Q&A resources, blog posts on recent space discoveries, and details on his published books including a photo-filled history of space exploration through 100 iconic objects.
http://iki.rssi.ru/mars96/mars96hp.html
An official scientific summary of the ill-fated Mars-96 mission, a Russian robotic spacecraft that failed to reach Mars after a rocket malfunction in November 1996 sent it back into Earth's atmosphere. Published by the Space Research Institute and edited by Dr. A. Zakharov, the site covers the mission's scientific goals, orbiter payload, small surface stations, and penetrator instruments in detailed technical depth.
https://jars.net/
The Johnston Amateur Radio Society (JARS) is a North Carolina-based ham radio club founded in 1975, serving members in the Johnston County area with a dedicated repeater on the AK4H frequency at 147.270 MHz. The site offers membership info, event listings, newsletters, a 'How to Become a HAM' guide, VE team details, and club history spanning over 40 years of amateur radio fellowship.
https://kb6nu.com/
Dan Romanchik (KB6NU) runs this long-running amateur radio blog covering news, equipment reviews, licensing study guides, and community happenings in the ham radio world. Notable features include No Nonsense study guides for Technician, General, and Extra class licenses, along with commentary on everything from MFJ equipment to repeater guides.
http://qrparci.org/
QRP ARCI is the QRP Amateur Radio Club International, a 16,000-member organization dedicated to low-power ham radio operating and homebrewing. The site hosts contest schedules, a Hall of Fame, links to kits and supplies, and the full contents of their quarterly magazine featuring technical articles by prominent QRP operators.
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://robgendlerastropics.com/
Robert Gendler's astrophotography site showcases a stunning image gallery of astronomical objects alongside essays on 140 popular celestial subjects and a beginner's astronomy primer. The site also features technical articles on advanced imaging techniques like hydrogen alpha color imaging and Photoshop mosaics, plus information about Gendler's published books on astronomy.
http://findu.com/
findU is a massive 58GB database archiving APRS (Automatic Packet Reporting System) data including weather observations, position reports, vehicle tracking, and telemetry from amateur radio operators worldwide. The site powers real-time weather forwarding to NOAA and the National Weather Service, and even tracks amateur radio payloads aboard the International Space Station.
https://ads.harvard.edu/books
The NASA Astrophysics Data System (ADS) Virtual Library offers free online access to a curated collection of astronomy and astrophysics books, ranging from Copernicus's 1543 classic to modern astrophysics textbooks. Researchers and enthusiasts alike can browse and print foundational works on celestial mechanics, stellar astrophysics, lunar science, and solar physics from leading institutions like Harvard and the Lunar and Planetary Institute.