Science & Nature
1413 sites
Subcategories:
- Astronomy & Space (390)
- Chemistry (7)
- Earth Sciences (24)
- Biology (76)
- Physics (29)
- Mathematics (51)
- Weather & Climate (100)
- Amateur Radio (681)
- Electronics (45)
http://hamuniverse.com/hamnews.html
Hamuniverse.com aggregates the latest ham radio news from major worldwide sources including ARRL, QRZ.com, Southgate ARC, and Amateur Radio Newsline, all from a single convenient page. Part of a larger amateur radio resource site, this news hub keeps operators informed on contests, satellite activity, licensing, and club events happening across the global ham radio community.
http://chebucto.ns.ca/~aa063
Mike Boschat's astronomy page celebrates 60 years of stargazing from Halifax, Nova Scotia, covering lunar, solar, meteor, and noctilucent cloud observations with an impressive collection of Soviet-made telescopes and binoculars. The site includes astro images, SOHO discoveries, links to clear sky clocks, light pollution maps, and a vast collection of astronomy resources alongside the author's work with the Aeronet Sunphotometer at Dalhousie University.
https://kc1xx.com/
KC1XX is the site for a competitive amateur radio station, featuring details about the station setup, antenna systems, and the team behind the operation. Visitors can browse the station gallery, search logs, and request QSL cards, with a bonus section covering the HJ4XX DX expedition.
https://hamfest.org/
The Huntsville Hamfest is one of the longest-running amateur radio events in the United States, held annually since 1954 at the Von Braun Center in Huntsville, Alabama. In 2026 it will host the ARRL National Convention, featuring a dealer show, flea market, forums, licensing opportunities, and activities for the whole family.
https://atmos.uw.edu/marka/or.normals.html
Hosted by the University of Washington's atmospheric sciences department, this page presents Oregon's monthly climate normals for the 1971-2000 period, including mean precipitation, maximum temperature, and minimum temperature data by location. Visitors can click on map markers to explore station-level climate statistics across the state, making it a handy reference for weather researchers and outdoor planners alike.
https://deepskyorg.tripod.com/deepsky_quiz.html
Deep-Sky.Org hosts an interactive quiz testing visitors' knowledge of deep-sky objects such as nebulae, galaxies, and star clusters. The multiple-choice format makes it a handy study tool for amateur astronomers looking to sharpen their observational knowledge.
http://nd6t.com/
ND6T's site is a hands-on collection of simple amateur radio projects covering antennas, BITX transceivers, Microchip PIC gadgets, and test equipment tips. It's a practical resource for ham radio hobbyists looking for accessible DIY electronics builds with real-world workbench guidance.
https://qrp-labs.com/
QRP Labs sells a wide range of amateur radio kits including multi-band transceivers, CW rigs, GPS receivers, synthesizers, and high-altitude balloon trackers at budget-friendly prices. The site is a go-to destination for QRP radio enthusiasts who enjoy building their own equipment, with kits ranging from beginner-friendly to highly technical designs like the WSPR balloon tracker.
https://pages.astro.umd.edu/~mcmiller/nstar.html
Professor M. Coleman Miller of the University of Maryland shares an in-depth educational resource on neutron stars, covering topics from formation and internal structure to pulsars, X-ray bursters, and gamma-ray bursts. The page blends academic rigor with accessible writing, including links to pedagogical reviews, Q&A sections, and visual aids that make complex astrophysics approachable.
https://enolagaia.com/at.html
Dr. Randall Whitaker's Observer Web is a comprehensive academic resource dedicated to autopoiesis and enaction, covering the cognitive biology theories of Humberto Maturana and Francisco Varela. It offers a tutorial, study plan, bibliography, encyclopaedia, and internet guide for anyone exploring second-order cybernetics, radical constructivism, and enactive cognitive science.