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://cnharc.org/
The Central NH Amateur Radio Club (CNHARC) is a 501(c3) non-profit organization serving ham radio enthusiasts in central New Hampshire, with club meetings, repeater information, newsletters, and member resources. Visitors can find meeting schedules covering topics like Software Defined Radio technology, net control schedules, mentoring programs, and a members gear-for-sale page.
https://brandoweather.com/
Brandon Skalniak's labor-of-love severe weather reference site features a Radar Museum cataloging over 5,000 tornadoes, derechos, and tropical cyclones spanning from 1991 to the present. Visitors will find comprehensive tornado lists organized by intensity, mesocyclone couplet data, and a Hall of Fame for notable Mesoscale Convective Discussions dating back to 2003.
https://deepimpact.astro.umd.edu/
The official University of Maryland archive for NASA's Deep Impact mission, which sent a spacecraft to collide with comet Tempel 1 in 2005 and later extended its mission as EPOXI to observe comet Hartley 2 and distant exoplanets. The site preserves science results, image and video galleries, team member profiles, and mission history through the spacecraft's final loss of contact in 2013.
http://edsradio.com/
Ed's Radio (AA6ED) is a comprehensive amateur radio resource focused on the Greater Los Angeles Area, covering local clubs across four counties, VHF/UHF nets organized by day, licensing exams, and swap meets. The site also includes educational content on basic electronics, Morse code, Q codes, and band plans, making it a handy reference for both new and experienced hams in Southern California.
https://f4iha.fr/
The blog of Olivier (F4IHA), a French amateur radio enthusiast who documents his homebrew radio projects including low-power QRPP transmitters, VFOs, antenna tuners, and fox-hunting modules built with Arduinos and components costing under 30 euros. Posts cover schematics, PCB design in KiCad, measurements, and hands-on construction with detailed technical write-ups that make it a great resource for DIY radio builders.
https://www.qsl.net/w4frc
The Ft. McCoy Amateur Radio Club (W4FRC) is a friendly ham radio club based in the Ocala National Forest area of Marion County, Florida, founded in October 1997. The site shares club meeting info, VE testing schedules, member photos, and an open invitation for newcomers to discover the hobby of amateur radio.
https://skip.cc/chase
Skip Talbot has documented over 458 storm chases since 2003, logging 288,186 miles and 156 tornado intercepts across more than two decades of pursuit. The site features yearly chase logs, a gallery, time-lapse videos, and detailed statistics that make it a fascinating firsthand record of storm chasing as a serious hobby.
https://qsl.net/tasma
The Two-Meter Spectrum Management Association (TASMA) is a group dedicated to managing and coordinating the two-meter amateur radio band. This page is a minimal redirect notice pointing visitors to the organization's new home at www.tasma.org.
http://stars.astro.illinois.edu/sow/spectra.html
Jim Kaler's comprehensive guide to stellar spectra covers everything from absorption and emission lines to the Doppler effect and spectral classification, all richly illustrated with images of rainbows, nebulae, and spectrograms. Part of Kaler's broader STARS educational project hosted at the University of Illinois, this deep-dive reference explains how astronomers decode the physical and chemical nature of stars through the light they emit.
https://qsl.net/gi4fum
David Hutchinson's personal homepage from County Antrim, Northern Ireland, featuring his amateur radio callsign GI4FUM and participation in the Amateur Radio World Ring webring. The site also touches on Antrim District Scouts, archery sports injury resources, and related links, making it a snapshot of a multifaceted Northern Irish hobbyist's online presence.