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://kc7nod.20m.com/index.htm
CW's radio page is a hobbyist resource dedicated to shortwave listening, featuring DIY projects and guides for devices like random wire antennas, static discharge units, ferrite couplers, and attenuators. The site offers practical technical content for SWL enthusiasts, including modification guides for receivers like the DX 390 and transformer builds.
https://pcars.org/wp
The Platinum Coast Amateur Radio Society (PCARS, callsign W4MLB) is a Florida non-profit club serving amateur radio operators in central and southern Brevard County for over 60 years. The site covers club membership, monthly meetings, the Melbourne Hamfest, VE licensing exams, ARRL Field Day, emergency nets, local repeaters, and mentorship resources for hams at every experience level.
https://kasonline.org/astroweb.html
The Kalamazoo Astronomical Society's curated astronomy link directory groups hundreds of carefully selected web resources into subject categories, from amateur telescope making and astrophotography to planetary exploration and dark-sky parks. Organized like a yellow pages phone book, this extensive collection makes it easy for both beginners and seasoned stargazers to find the best astronomy sites on the web.
http://www.zerobeat.net/
ZeroBeat.net is a hub for radio communications enthusiasts, featuring technical articles, historical items, and resources covering amateur radio topics like CW telegraphy, QRP low-power operation, and R.L. Drake equipment. Visitors will find links to antenna handbooks, online licensing exams, Morse code resources, and submarine radio operations, making it a handy reference for hams of all experience levels.
https://rammb-data.cira.colostate.edu/tc_realtime
Run by NOAA's Regional and Mesoscale Meteorology Branch at Colorado State University, this site tracks currently active tropical cyclones worldwide in real time using satellite imagery and meteorological data. Researchers and weather enthusiasts can browse live storm data, archived seasons going back to 2006, and products developed by NESDIS/STAR/RAMMB scientists.
https://www.qsl.net/w4amc
The Brightleaf Amateur Radio Club (BARC) of Greenville, NC maintains this hub for club members and ham radio enthusiasts, featuring meeting info, membership rosters, newsletters, and emergency preparedness resources. With callsigns W4AMC, W1VOA, and W4UHS, the club covers everything from Skywarn weather spotting to DX activity links and real-time solar data.
http://rocklandastronomy.com/
The Rockland Astronomy Club (RAC) is one of the East Coast's premier nonprofit astronomy education organizations, hosting star parties, lectures, dark sky observing sessions, and the renowned Northeast Astronomy Forum (NEAF). Visitors can find event schedules, observing locations at New York state parks, and information about joining a vibrant community of amateur astronomers.
http://lunar-occultations.com/iota/iotandx.htm
The International Occultation Timing Association (IOTA) is a scientific organization dedicated to observing, timing, and reporting occultations and eclipses, including lunar grazes and asteroid occultations. The site serves as a comprehensive hub with prediction tables, observing guides, software tools like LiMovie and KIWI-OSD, and regional sections spanning Europe, the Middle East, India, Australasia, and East Asia.
http://berfield.com/main.html
Scott Berfield's personal homepage covers his passion for amateur astronomy and CCD imaging alongside video game production and family history for the West Coast Berfields. The astronomy and CCD content takes top billing in the meta description and keywords, making it the site's defining draw for stargazers and hobbyist imagers.
http://coolwx.com/record
CoolWx tracks unofficial record-breaking temperatures across the globe, cataloging high and low temperature records from over 3,800 weather stations dating back to July 2010. Visitors can explore historical animations of weather patterns by region and time period, as well as ranked lists of the most prolific record-breaking days in recent climate history.