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://wd0hwt.net/
The Metro Area Repeater Association (MARA) operates the WD0HWT repeater system serving the Minneapolis/St. Paul, MN region on 146.25/.85 and 449.800/444.800 MHz. The site covers repeater rules of conduct, system description, history, emergency communications support, and membership contribution details for Twin Cities area amateur radio operators.
https://britastro.org/useful-links
The British Astronomical Association, supporting amateur astronomers since 1890, maintains this curated directory of useful links covering UK astronomy societies, observing resources, and related organizations. Visitors will find connections to groups like the Society for Popular Astronomy, the Federation of Astronomical Societies, and many more resources spanning the full breadth of amateur astronomy.
https://josephoregonweather.com/
Joseph Oregon Weather is a comprehensive local weather station site covering Joseph, Oregon and Wallowa County, featuring live conditions, forecasts, webcams, air quality, road conditions, fire information, and earthquake data. Running since 1999, it serves as a one-stop regional resource with the charming mascot WeatherBee and live data feeds from a personal weather station integrated with National Weather Service data.
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.
http://allthesky.com/
Created by Till Credner and Sven Kohle, AllTheSky.com is a stunning astrophotography gallery spanning comets, nebulae, galaxies, constellations, aurora borealis, and atmospheric phenomena. The site offers an impressive breadth of celestial imagery including nightscapes, 360-degree views, live all-sky feeds, and articles that make it a rich destination for astronomy enthusiasts.
https://w3eax.umd.edu/
W3EAX is the Amateur Radio Association at the University of Maryland, a student club with roots going back to 1933 and an ARRL-affiliated callsign. Their well-equipped shack includes HF, UHF/VHF, Amateur Television, and satellite gear, plus a full electronics workbench for hands-on radio experience.
https://cometchasing.skyhound.com/
Comet Chasing, maintained by Skyhound, provides monthly up-to-date observing guides for telescopic comets visible this month, complete with finder charts, observing synopses, and brightness predictions tailored to your latitude and equipment. It covers current comets like Kreutz sungrazers and PANSTARRS discoveries, making it an invaluable tool for amateur astronomers who want to hunt comets visually or through imaging.
http://sk3bg.se/contest
SM3CER Contest Service, run by Jan-Eric Rehn of Sweden, is a comprehensive hub for amateur radio contesters featuring a worldwide contest calendar, contest rules, results, and software links. Active since 1997, the site aggregates mailing lists, DX spotting tools, callsign lookups, and contest-related resources that make it an indispensable reference for serious ham radio operators.
https://w7eca.org/
The Great Falls Area Amateur Radio Club (W7ECA) is a ham radio club serving operators in Cascade County and surrounding North Central Montana. The site covers club membership, repeater information, ARES emergency communications, and events like Field Day and the historic Glacier Waterton Hamfest.
https://tropicalweather.net/
Tropicalweather.net is a comprehensive resource covering tropical cyclones, hurricane forecasts, and preparedness tips, with special focus on the North Atlantic basin and nearly two decades of historical hurricane summaries. Visitors can test their knowledge with trivia quizzes at three difficulty levels, browse climatology data for Caribbean cruise destinations, and even explore career paths in TV meteorology.