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://members.tripod.com/~Hamnut_2/index.htm
Larry Miller (KB5ITT) shares his adventures installing ham radio repeaters on mountain peaks in the San Juan Mountains of southwestern Colorado, blending technical radio work with exploration of ghost towns and scenic four-wheeling routes. The site covers two specific mountain-top repeater builds near Silverton, historical photography of old mining towns like Animas Forks, and off-road trail information for the region.
http://einstein.stanford.edu/
The official site for NASA's Gravity Probe B mission, a Stanford University experiment designed to test two key predictions of Einstein's general theory of relativity using ultra-precise gyroscopes orbiting Earth. Visitors can explore the mission's history dating back to 1959, the groundbreaking engineering advances required to make it possible, technical papers, image galleries, and video overviews of spacetime concepts.
http://gnarc.org/
The Greater Norwalk Amateur Radio Club (GNARC) is a Connecticut-based ham radio club serving the Norwalk area, featuring meeting minutes, membership info, repeater listings, and event photos. With archives going back to 2013 and active records of club officers, field day activities, and newsletters, this site offers a thorough look at an engaged local amateur radio community.
http://gazers.org/
The Penobscot Valley Star Gazers (PVSG) is a Maine-based astronomy club hosting monthly meetings both in-person at John Bapst High School in Bangor and via Zoom. The site offers a calendar of upcoming events, a gallery, an archive, and real-time comet tracking resources for members and stargazing enthusiasts in the region.
https://qsl.net/k7par
The Puget Amateur Radio Society (PARS) is a general interest amateur radio club based in the Bellevue/Redmond, Washington area, meeting monthly at the North Bellevue Community Center. The site lists club officers, meeting details, and resources like bylaws and meeting minutes, and welcomes both licensed hams and newcomers interested in earning their first license.
https://thevenustransit.com/
Run by Gadi Eidelheit, this astronomy blog covers celestial events like Venus transits, solar perihelion, lunar phases, and space missions with original photography. The site is a rich mix of observational astronomy and astrophotography, with an impressive archive of posts and labels spanning planets, eclipses, satellites, and even the Israeli Beresheet lunar mission.
https://rutar.org/
Alex Rutar is a mathematics postdoctoral researcher specializing in fractal geometry, dynamical systems, and dimension theory, with affiliations at the University of Jyväskylä and a PhD from the University of St Andrews. His site serves as an academic hub linking to his publications, expository writing, CV, and open-source developer tools built around LaTeX and terminal utilities.
http://ee.cleversoul.com/
The EE Compendium is a comprehensive reference hub for electronics engineers, students, and hobbyists covering microcontrollers, embedded systems programming, and hardware development tools. Visitors will find curated links and resources spanning popular platforms like Atmel AVR, Microchip PIC, Intel 8051, and Freescale chips, along with project kits, robotics, software compilers, and career resources.
https://asteroidoccultation.com/
Steve Preston's long-running resource provides predictions for asteroid occultation events, listing when asteroids will pass in front of stars as seen from Earth. Covering upcoming events through 2026 with supplementary observation guides and FAQs, it serves as a reference for amateur and professional astronomers tracking these brief but scientifically valuable phenomena.
https://irlp.net/
The official home of the Internet Radio Linking Project (IRLP), a system that connects amateur radio repeaters around the world using Voice over IP technology. The site provides information, maps, node codes, frequencies, and technical details for ham radio operators looking to link into the IRLP network.