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://mineralienatlas.de/
Mineralienatlas is a comprehensive German-language encyclopedia and community platform covering mineralogy, geology, paleontology, and mining, supported by thousands of members worldwide. Visitors can search minerals by chemical properties, browse fossil and mineral portraits, explore collecting locations, and dive into crystallography and systematic mineralogy.
https://spacearchive.info/
Space Archive, maintained by Brian Webb since 2000, is a comprehensive regional resource covering space and astronomy for the American Southwest, with a particular focus on Vandenberg Space Force Base rocket and missile launches including schedules, viewing guides, launch history, and multimedia. The site also features astrophotography tips, suburban astronomy guides, dark sky sites, and over two decades of archived space and astronomy news.
https://solarviews.com/eng/mars.htm
Calvin J. Hamilton's comprehensive Mars reference page covers everything from the planet's geology and atmosphere to its moons, polar regions, and exploration missions like Viking, Pathfinder, and the Mars Rovers. Packed with images, animations, 3D galleries, and scientific articles, it serves as a deep-dive educational hub for anyone fascinated by the Red Planet.
https://moonconnection.com/
MoonConnection.com is a comprehensive lunar reference covering moon phases, eclipses, Apollo missions, tides, and the moon's gravitational effects, complete with interactive tools and a monthly phases calendar. It also offers practical guides on fishing, hunting, and night photography by moon phase, plus companion mobile apps for tracking lunar cycles on the go.
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://copaseticflow.blogspot.com/
Copasetic Flow is a technically rich blog blending amateur radio operations with hands-on software experiments, covering topics like POTA activations, antenna comparisons, QSO logging, and ionogram analysis. The author also documents AI and programming experiments with tools like ChatGPT, Codex CLI, and the Whisper API, making it a fascinating intersection of ham radio and modern tech tinkering.
https://1728.org/magntude.htm
A focused online calculator for computing astronomical magnitudes, covering apparent magnitude, absolute magnitude, and stellar luminosity with worked examples using real celestial objects like the Sun, Moon, and Sirius. The tool walks visitors through the underlying math of the magnitude scale, making it a handy reference for astronomy students and hobbyists alike.
https://macastro.org.au/
The Macarthur Astronomical Society serves amateur astronomers in Sydney's south west, offering field nights at multiple observation sites, astro imaging workshops, citizen science projects, and a Deep Space Hunt program. With resources like the Messier and Caldwell lists, ISS tracking, sky conditions, and a 2028 Solar Eclipse planning page, this is a well-rounded hub for a genuinely active local astronomy club.
https://hepdata.net/
HEPData is an open repository for publication-related High-Energy Physics data, hosting experimental datasets from major LHC collaborations including ATLAS, ALICE, CMS, and LHCb. Researchers can search and submit data using advanced query syntax, making it an essential reference tool for particle physics scientists worldwide.
http://k3pgp.org/
K3PGP's Experimenter's Corner is a wide-ranging amateur radio and electronics hobbyist site covering everything from VLF to light, including moonbounce (EME), lasers, antenna construction, and weak signal work. Run by the operator K3PGP, the site spans decades of experimentation and also touches on astronomy, bicycle construction, and software.