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://sky-chaser.com/
Christopher Collura's Sky-Chaser site chronicles his adventures as a SKYWARN storm spotter and hurricane chaser, with tropical weather tracking, storm documentation, and real-time links to NHC and JTWC data. Beyond extreme weather journalism, the site covers his many pursuits including skydiving, HAM radio, photography, computer programming, and aerobatics.
http://cactus-intertie.org/
The Cactus Intertie System is a private UHF amateur radio network established in 1971, spanning large portions of the American Southwest and beyond through a web of remotely controlled base stations linked by full duplex RF. Run by Cactus Intertie, Inc., a 501(c)(3) nonprofit, the site covers membership, affiliate clubs, technical support, educational materials, and the network's extensive history across multiple states.
http://rocketroberts.com/astro/astrophot.htm
Joe Roberts shares a remarkable personal archive of amateur astrophotography spanning from 1974 to 2013, featuring backyard telescope images of deep-sky objects, planets, comets, and lunar phenomena. The site includes technical articles, a tour of his personal observatory, and a gallery of stunning images that rival professional observatory photography from decades past.
http://butikov.faculty.ifmo.ru/Projects/Collection.html
Created by physicist E. Butikov of IFMO, this collection presents interactive Java applets simulating remarkable three-body gravitational motion problems, including the famous figure-eight periodic orbit and restricted three-body scenarios. It bridges classical Newtonian mechanics and celestial mechanics with hands-on simulations suitable for students and advanced researchers exploring planetary system dynamics.
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://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://okcastroclub.com/
The Oklahoma City Astronomy Club, founded in 1958, is a 501(c)(3) nonprofit serving amateur astronomers in the Oklahoma City area with star parties, public outreach, an observatory, and the prestigious Okie-Tex Star Party. Members enjoy access to club telescopes, a library, a newsletter called the Gazette, and opportunities to contribute real scientific data to the astronomical community.
http://btstream.com/resc.html
Bitstream Technologies curates an extensive directory of electronics resources spanning circuit archives, DSP tools, embedded systems, robotics, PCB design, and IC information. A well-organized link library for engineers and hobbyists, covering everything from FPGA design tools to repair and test equipment references.
https://nobarc.org/
The Northern Berkshire Amateur Radio Club (NoBARC) serves approximately 150 licensed ham radio operators in Berkshire County, Massachusetts, with repeaters positioned atop Mount Greylock at 3,500 feet providing coverage across a 250-300 mile radius. The site features meeting schedules, DXpedition presentations, repeater information, license classes, field day results, and resources for new hams.
https://cqrlog.com/
CQRLOG is a feature-rich ham radio logging application for Linux, built on a MySQL database and supporting over 140 radio types via hamlib integration. The site serves as the official home for the software, offering downloads, user forums, DX cluster support documentation, and updates from the development team.