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://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://iceinspace.com.au/
IceInSpace is the largest online amateur astronomy community in the Southern Hemisphere, serving over 20,000 registered members across Australia, New Zealand, and South America. The site features astronomy forums, equipment reviews, DIY projects, astrophotography galleries, event reports, and an astronomy glossary tailored to southern hemisphere observers.
https://spegweb.com/
Speg's personal site covers storm chasing, tornado information, travel, and photography, making it a classic old-web hobbyist destination with a clear passion for severe weather. Navigation sections hint at radio and TV links alongside personal writings, giving the site a broad but weather-focused appeal.
https://izw1.caltech.edu/ACE
The official homepage for NASA's Advanced Composition Explorer (ACE) spacecraft, hosted at Caltech, providing mission data, instrument specifications, and real-time solar wind readings. Visitors can access browse plots, science publications, press releases about cosmic ray research, and data from nine onboard instruments measuring solar and galactic particle composition.
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.
https://crawford.tardigrade.net/journal/index.html
Rod Crawford's Spider Collector's Journal chronicles decades of arachnid collecting expeditions from 1986 through the present, including trips to the Russian Kuril Islands and Sakhalin Island. The site features year-by-year narrative accounts, photo albums, and detailed documentation of tools and techniques used in scientific spider collection.
http://ka7oei.blogspot.com/2026/03/modifying-mfj-5008-parabolic-ultrasonic.html
KA7OEI is Clint's technically-focused amateur radio and electronics blog, covering hands-on modifications and experiments with devices like the MFJ-5008 parabolic ultrasonic receiver. This particular post dives deep into improving the sensitivity and frequency response of the discontinued ultrasonic tool, with detailed photos, circuit analysis, and practical applications like bat detection and power line fault finding.
https://theodoregray.com/PeriodicTable
Theodore Gray's landmark site documents his handcrafted wooden periodic table desk, which contains actual samples of all 118 chemical elements, with thousands of photos, rotatable 3D images, videos, and detailed information for each element. With over 2,379 samples, 471 minerals, and a wealth of interactive features including an element-spelling game and reaction balancing, this is one of the most thorough and visually stunning chemistry reference sites on the web.
http://weather.uwyo.edu/upperair
Hosted by the University of Wyoming's Atmospheric Science department, this site provides access to real-time and historical upper air data including soundings, upper air maps, and balloon trajectory forecasts for the US and Wyoming. It's a go-to reference for meteorologists, students, and weather enthusiasts needing professional-grade atmospheric data.
https://wb4aej.com/hamdomain
WB4AEJ's Ham Domain is a comprehensive amateur radio resource built around a massive directory of ham radio operator websites, organized by callsign. Beyond the directory, the site covers special events stations, callsign lookups, fox tone sequences, and links to major organizations like ARRL, AMSAT, and TAPR.