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://lcwo.net/
LCWO.net, created by Fabian Kurz (DJ5CW), is a comprehensive web-based platform for learning Morse code (CW) using the Koch method, with interactive exercises, progress tracking, and a global community of learners. The site features user highscores, forums, user groups, and multilingual support across dozens of languages, making it a go-to resource for ham radio operators worldwide.
http://wa1mba.org/
Tom WA1MBA has built a comprehensive resource dedicated to microwave amateur radio, covering everything from 10GHz rainscatter propagation to millimeter wave band projects, waveguide design, and LNA and quadrupler hardware builds. Active since 1996, the site features technical papers, conference presentations, RF connector guides, and a mailing list reflector for fellow microwave ham enthusiasts.
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://collectspace.com/news/news-061209a.html
CollectSPACE covers space history news and milestones, including this detailed article tracking which astronaut became the 500th person to fly into space during the STS-127 shuttle mission in 2009. The site provides a comprehensive numbered list of all 500 spacefarers up to that point, mission by mission, making it a valuable reference for space history enthusiasts.
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.
https://zl2pd.com/index.html
Andrew Woodfield (ZL2PD) has built an extensive technical resource covering homebrew QRP transceivers, Si5351 VFO/BFO projects, antenna tuners, and DIY electronics for amateur radio operators. The site spans decades of original projects with detailed build guides, circuit diagrams, and modification instructions for portable HF SSB gear.
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.
https://www.was.org.nz/useful-links
The Wellington Astronomical Society maintains this curated links page connecting visitors to astronomy resources across New Zealand and beyond, from national societies to educational tools for children. Organized into regional and international sections, it serves as a handy gateway to observatories, sky guides, STEM activities, and fellow astronomy clubs throughout New Zealand.
http://lightningwizard.com/maps/usa.html
Lightning Wizard provides detailed convective weather forecast maps for North America, Europe, and the Caribbean, pulling data from the National Centers for Environmental Prediction and the National Weather Service. The site covers advanced meteorological parameters like CAPE, bulk shear, and MSL pressure across multiple forecast time intervals, making it a valuable tool for storm chasers and weather enthusiasts.
https://caacwv.com/
The Central Appalachian Astronomy Club is a 501(c)(3) non-profit based in West Virginia dedicated to promoting amateur astronomy and partnering with local schools and universities. Visitors can learn about the club's 20-foot Ash Dome observatory housing a 16-inch Meade LX200 telescope, upcoming meetings and events, and how to join.