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://saguaroastro.org/
The Saguaro Astronomy Club is an Arizona-based amateur astronomy organization that has been hosting star parties, outreach events, and observing programs since 1977. Members can find observing lists, award programs, novice guides on eyepieces and binoculars, newsletters, and a full calendar of events including the Grand Canyon Star Party and the Arizona Spring Star Party.
https://nineplanets.org/amateur-astronomical-observatories
The Nine Planets hosts a curated list of amateur astronomical observatories built by individual hobbyists, compiled by the site owner during research for their own backyard observatory project. Visitors will find practical inspiration and design ideas ranging from simple roll-off roof builds to more complex dome structures, all set within a broader astronomy reference site covering planets, stars, comets, and equipment guides.
https://qsl.net/cemarc
CEMARC (Council of Eastern Massachusetts Amateur Radio Clubs) is the ARRL-affiliated umbrella organization representing the ham radio community across Eastern Massachusetts, with delegate clubs meeting quarterly to coordinate activities. The site covers club member interests, on-air nets, Field Day information, local club listings, and the council's history dating back to its founding memo.
https://targetarea.net/
Scott Blair's personal site, active since 1997, focuses on storm chasing and severe weather photography, featuring copyrighted images of tornadoes and violent storms captured in the field. The site also honors Eric Nguyen, a fellow storm observer and meteorologist, with a link to a memorial scholarship supporting future weather scientists.
https://spacearchive.info/
Space Archive, maintained by Brian Webb since 2000, is a comprehensive regional resource covering space and astronomy for the American Southwest, with a particular focus on Vandenberg Space Force Base rocket and missile launches including schedules, viewing guides, launch history, and multimedia. The site also features astrophotography tips, suburban astronomy guides, dark sky sites, and over two decades of archived space and astronomy news.
http://spaceshipone.airshowjournal.com/2004
Fred Bruenjes documents his firsthand experience photographing the historic June 21, 2004 launch of SpaceShipOne, the first privately funded spacecraft to reach space, at Mojave Airport. The site is part of a larger airshow journal covering dozens of air shows across California and beyond, featuring hundreds of original photos from events ranging from Miramar to Oshkosh.
http://yarc.org/
The Yonkers Amateur Radio Club (W2YRC) is a New York-based ham radio club affiliated with the ARRL, featuring repeater frequencies, EchoLink and WiresX node info, and a full calendar of events including Field Day, fox hunts, and VE testing sessions. Members and visitors can find meeting schedules, study guides, software resources, a photo gallery, and membership renewal options all in one place.
http://bobsknobs.com/
Bob's Knobs sells specialized collimation thumbscrews that let telescope owners align their Cassegrain and Newtonian telescopes without any tools. The product line covers knobs for popular telescope brands including Losmandy, Celestron, and TeleVue mounts, with custom sizing options and downloadable installation guides.
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.
http://mathres.kevius.com/art.html
Bruno Kevius has assembled an extensive link collection covering mathematical art, fractals, chaos theory, and geometry, featuring resources on M.C. Escher, polyhedra, cellular automata, and fractal software. With over 120 curated links spanning strange attractors, tessellations, origami, and geometric sculpture, this is a rich reference hub for anyone exploring the intersection of math and visual art.