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://qsl.net/ve3bdb
The ORIGINAL Wireless Set No. 19 Group is a long-running online community dedicated to collectors and users of the WWII-era military radio known as the Wireless Set No. 19, active since 1997. Visitors can explore technical notes, photo galleries, a world inventory of surviving sets, history of the radio in Canadian service, and member submissions covering everything from operating tips to movie appearances.
https://www.qsl.net/g7txq
The homepage for the Association of Norfolk RAYNET Groups, a UK-based amateur radio emergency communications network serving Norfolk. The site provides information about who they are, links to individual group websites, and resources pointing to other amateur radio sites.
https://amsatnet.com/
The Houston AMSAT Net, run by KK5DO (Bruce Paige), is a weekly amateur radio net focused on satellite communications, meeting Tuesday evenings at 8PM Central and accessible via multiple repeaters and digital linking systems. The site covers AMSAT awards programs, satellite operator achievements, field day history, and resources for ham radio operators interested in communicating through amateur satellites.
http://server1.wikisky.org/?locale=EN
WikiSky.org is an interactive online sky map that lets users explore stars, galaxies, nebulae, and constellations through a browser-based virtual telescope interface. The site supports over 15 languages and includes community features like astro photography, forums, blogs, and user-contributed star annotations.
http://dibonsmith.com/graphics.htm
Created by Richard Dibon-Smith, this site provides graphics and reference information for all 88 officially recognized constellations, from Andromeda to Vulpecula. Each constellation gets its own dedicated page, making it a handy visual reference for amateur astronomers and sky-watchers.
https://a.atmos.washington.edu/data/weather.html
Hosted by the University of Washington Atmospheric Sciences department, this data-rich portal aggregates real-time and archived weather observations for the Pacific Northwest, including surface obs, time series plots, pressure readings, and climatological normals. Researchers, forecasters, and weather enthusiasts will find an extensive collection of links to regional stations, webcams, El Nino data, and major climate data servers like NOAA and the Western Regional Climate Center.
https://asliclub.org/
The Astronomical Society of Long Island (ASLI) is an amateur astronomy club that holds weekly meetings at the Vanderbilt Planetarium in Centerport, NY, with Zoom broadcasts available for remote attendees. Visitors can join observing sessions, get telescope advice, and explore the night sky alongside dedicated hobbyist astronomers without needing to own any equipment.
https://www.qsl.net/ik1mtx/raduno2001.htm
This page announces the 10th Raduno Radioamatori Superga, a three-day amateur radio gathering organized by the A.R.I. section of Turin, Italy, held at the Basilica di Superga in June 2001. Visitors would find a detailed event schedule covering HF/VHF/UHF radio operations, an exhibition of homemade and vintage radio equipment, Morse key displays, and a communal lunch at the monastery refectory.
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://electronics2000.co.uk/
Electronics 2000, created by Simon Carter, is a comprehensive hobby electronics reference packed with online calculators for resistors, capacitors, inductors, Ohm's Law, and more, plus technical data articles, pin-outs, and a beginner's guide. The site also offers downloadable Windows software like Electronics Assistant and an EPE Index, making it a genuinely useful toolkit for hobbyists, students, and engineers alike.