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://ve7sar.blogspot.com/
The digital home of the SARC Communicator, the newsletter of Surrey Amateur Radio Communications (VE7SAR) based in Surrey, BC, Canada. Each issue is packed with homebrew projects, DX expedition reports, radio history features, and equipment reviews, making it a rich resource for ham radio enthusiasts of all experience levels.
http://stargazing.net/david/constel/skymapindex.html
David Haworth's stargazing site offers a comprehensive index of printable sky maps organized by month, time, and observing location, with five detail levels ranging from basic star fields to full constellation boundaries. Each map links to more detailed constellation charts, making this a practical reference for amateur astronomers heading out for a night of naked-eye or telescopic observing.
https://theastronomycafe.net/
An archived recreation of Dr. Sten Odenwald's legendary 'Astronomy Cafe' website from circa 2001, once a destination where a professional astronomer answered thousands of public questions about space, the universe, and infrared astronomy. The site preserves a nostalgic snapshot of early web science outreach, featuring Dr. Odenwald's books, his 'Ask the Astronomer' feature, and philosophical explorations of concepts like 'nothing' and the Big Bang.
http://theastronomer.org/index.html
The Astronomer is a long-running UK amateur astronomy magazine with a history dating back to 1964, featuring meteor shower guides, supernova lightcurves, and annual meeting records. Compiled largely by Tracie Heywood, the site offers a complete magazine index, historical awards archives, and observational data useful for both visual and radio observers.
http://g3pho.free-online.co.uk/microwaves
A hobbyist site dedicated to microwave frequencies above 1000MHz, inviting visitors to explore the upper reaches of the amateur radio spectrum. The site is part of the Amateur Radio World Ring webring, connecting enthusiasts focused on microwave and UHF/SHF band experimentation.
https://cadcwww.dao.nrc.ca/
The Canadian Astronomy Data Centre (CADC) is an official Government of Canada research facility that archives and provides access to astronomical data for scientists and researchers. Hosted by the National Research Council of Canada, it serves as a centralized repository for observational astronomy data collections.
http://jgiesen.de/welcomeEnglish.htm
A rich hobbyist resource by J. Giesen featuring an extensive collection of Java and JavaScript applets covering astronomy topics like sun and moon phases, planet positions, sundials, Venus transits, and satellite observation. Visitors will also find physics quizzes, chaos and fractal simulations, color theory tools, and links to books and software, making it a deep interactive playground for science enthusiasts.
https://sidewalkastronomers.us/
The Sidewalk Astronomers are a public service amateur astronomy association founded in the tradition of John Dobson, dedicated to bringing telescopes directly to the public in parks, street corners, and busy public spaces. The site features event schedules, telescope plans, newsletters, international projects, and resources for local chapters around the world.
https://dxmaps.com/spots/mapg.php?Lan=E
DXMAPS is a real-time interactive mapping tool for amateur radio operators, displaying live QSO contacts and SWL spots across multiple bands and propagation modes worldwide. Visitors can filter by frequency band, propagation type (Sporadic-E, Aurora, EME, Tropo, F2, and more), region, and data source including DX-Cluster and PSK Reporter, making it an invaluable tool for DXers and ham radio enthusiasts.
http://iki.rssi.ru/mars96/mars96hp.html
An official scientific summary of the ill-fated Mars-96 mission, a Russian robotic spacecraft that failed to reach Mars after a rocket malfunction in November 1996 sent it back into Earth's atmosphere. Published by the Space Research Institute and edited by Dr. A. Zakharov, the site covers the mission's scientific goals, orbiter payload, small surface stations, and penetrator instruments in detailed technical depth.