Science & Nature
1426 sites
Subcategories:
- Astronomy & Space (395)
- Chemistry (8)
- Earth Sciences (24)
- Biology (77)
- Physics (29)
- Mathematics (53)
- Weather & Climate (104)
- Amateur Radio (681)
- Electronics (46)
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://itis.gov/
ITIS is the official Integrated Taxonomic Information System, a partnership between U.S. federal agencies and global specialists providing authoritative scientific names and taxonomic classifications for plants, animals, fungi, and microbes worldwide. Researchers and biodiversity professionals can search by common name, scientific name, or TSN identifier, access hierarchical taxonomic reports, and download the full database for integration into their own projects.
https://northlandantiqueradioclub.com/
The Northland Antique Radio Club (NARC) is a Minnesota-based club for vintage radio enthusiasts, hosting events like Radio Daze swap meets, auctions, and hands-on restoration workshops in the Minneapolis/St. Paul area. The site features event calendars, photo galleries from past gatherings, membership information, and restoration notes for antique radios.
https://xeno-canto.org/
Xeno-canto is a massive community-driven database of wildlife sound recordings from around the world, covering birds, frogs, mammals, bats, and more, browsable by region or taxonomy. Launched in 2005, it serves researchers, birders, and curious listeners alike with tens of thousands of freely downloadable recordings backed by an open API and active community forum.
http://casswww.ucsd.edu/archive/public/tutorial/History.html
Gene Smith of UC San Diego's Center for Astrophysics and Space Sciences presents a detailed tutorial on the history of astronomy, tracing human observation of the skies from Stonehenge and ancient agrarian cultures through Pythagoras, Aristotle, Aristarchus, Copernicus, Kepler, and Galileo. Rich with links to related topics like archaeoastronomy, eclipse prediction, and the Music of the Spheres, this page is part of a broader astronomy education series hosted by UCSD.
https://starastronomy.org/
STAR (Society of Telescopy, Astronomy, and Radio) is a Monmouth County, NJ amateur astronomy club founded in 1957, offering monthly meetings, star parties, observing nights, and public outreach programs for all experience levels. The site features sections on telescope making, light pollution, a spectrogram tool, member photos, and a picture of the day, making it a rich hub for local stargazers.
http://davidmalin.com/fujii/fujii_index.html
A stunning image gallery showcasing the complete Akira Fujii and David Malin Images (DMI) collection of astrophotography, organized into categories including constellations, Milky Way, star trails, solar eclipses, comets, and aurorae. The collection features wide-field photographs of the southern sky taken from Australian observatories, capturing objects like the Southern Cross, Carina Nebula, and Comet McNaught with remarkable detail.
https://castfvg.it/galassie/indexgal.htm
An extensive galaxy catalog reference compiled by the Circolo Astrofili Talmassons (C.AS.T.), an Italian astronomy club, featuring member-photographed images organized across major catalogs including NGC, UGC, IC, PGC, Messier, and VCC. The site covers thousands of galaxies alongside deep sky objects, quasars, and galaxy clusters, making it a remarkable visual archive built collaboratively since 1996.
https://weather.ral.ucar.edu/upper
RAL Real-Time Weather's Upper-Air page, maintained by NCAR's Research Applications Laboratory, provides real-time rawinsonde plots and upper-atmosphere wind and temperature data across multiple pressure levels from 925mb to 200mb. Researchers and weather enthusiasts can browse SkewT/LogP charts, loop multi-day animations, and access archived upper-air data sponsored by the NSF National Center for Atmospheric Research.
https://dxnews.com/
DXnews.com is a comprehensive news hub for ham radio operators, covering DX expeditions to rare and remote locations like Antarctica, Svalbard, and the Marquesas Islands. The site tracks upcoming and active DX peditions, contest activity, IOTA references, and community forum posts, making it an essential resource for DXers worldwide.