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://centexastronomy.org/
The Central Texas Astronomical Society operates Meyer Observatory and the Turner Research Station near Clifton, Texas, hosting public open houses and member star parties with large-aperture telescopes. Their mission spans stargazing outreach, astrophotography, astronomy education, and research for both newcomers and experienced observers in the Central Texas region.
https://hamradio.lv/
Created by Andris Bruņenieks (callsign YL2FD), this Latvian-language site offers a rich exploration of ham radio history, including the history of wireless telegraphy, radio in Latvia, the Titanic disaster, and Marconi's legacy. Visitors will also find technical resources covering antenna theory, propagation formulas, CW keys, and vintage rigs like Drake and Heathkit.
https://umass.edu/rso/hamradio
The official homepage of the UMASS Amateur Radio Club (callsign W1PUO), a student-run club at the University of Massachusetts Amherst founded in 1996 by College of Engineering students. The club offers a shared radio shack, licensing classes for prospective hams, and public service events open to all five-college university students, faculty, staff, and their families.
http://reptile-database.org/
The Reptile Database, maintained by Peter Uetz and Jiří Hošek since 1995, is a comprehensive scientific reference cataloging all known reptile species including lizards, snakes, turtles, crocodiles, tuataras, and amphisbaenians. With advanced search tools, downloadable data, and regularly updated species counts backed by a team of volunteer editors, it serves as a definitive taxonomic resource for herpetologists and enthusiasts alike.
https://museum.state.il.us/exhibits/mazon_creek/about_mazon_creek.html
An educational exhibit from the Illinois State Museum exploring the famous Mazon Creek fossil deposits, dating back approximately 300 million years to the Pennsylvanian Period. Visitors can browse detailed pages on specific plant and animal fossils found in ironstone concretions, learn about the Francis Creek Shale formation, and explore why this site is considered one of the world's premier Lagerstätten.
https://qsl.net/k6agf
A QSL.net-hosted personal site for the amateur radio callsign K6AGF, accessible through the QSL directory structure used by ham radio operators worldwide. The site's file index reveals image and page directories typical of a hobbyist ham radio personal page from the mid-2000s.
https://www.qsl.net/ac6xi
AC6XI's personal amateur radio homepage, featuring a link to a how-to page and contact information for this licensed ham operator. The site is sparse but serves as a basic online presence for the callsign AC6XI, with promises of future updates.
https://exoplanet.eu/home
The Encyclopaedia of Exoplanetary Systems, maintained by a dedicated research team since 1995, catalogs over 8,000 confirmed extrasolar objects with filtering, sorting, and export tools for professional and amateur astronomers alike. Visitors can explore databases on binary star systems and circumstellar disks, generate online plots, view planetary systems in 3D and even virtual reality, and browse an exhaustive bibliography of exoplanet discoveries.
https://eskimo.com/~oolon/paladin/index.html
The Paladin Contest Club is a casual amateur radio group centered around sharing a special club callsign for contests and mini-DXpeditions, with no formal score competition against other clubs. The site offers access to club bylaws, a member roster, contest scores, and logs, all coordinated by Jack Fleming (WA0RJY).
http://astrochemistry.eu/
Astrochemistry.eu, maintained by Guido W. Fuchs, serves as a collaborative hub for researchers in astrophysics and astrochemistry, covering observational, laboratory, and theoretical investigations of interstellar chemistry. Visitors can find featured news on prize-winning discoveries, upcoming conferences, job opportunities, and curated links to major databases, journals, and research networks worldwide.