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)
http://uacnj.org/
The United Astronomy Clubs of New Jersey (UACNJ) operates multiple observatories at Jenny Jump State Forest and hosts regular public stargazing nights, meteor shower events, and astronomy programs for all ages. The site serves as a hub for member clubs, event scheduling, live sky cameras, newsletter archives, and donation drives for new observatory construction.
http://ka7oei.blogspot.com/
Clint KA7OEI shares deep technical explorations on amateur radio, electronics, and RF experimentation, with posts covering everything from WSPR beacons and WWVB clocks to ultrasonic receivers and antenna modifications. The breadth of tag keywords alone reveals years of obsessive hands-on tinkering, making this a goldmine for technically-minded hams and electronics hobbyists.
https://dcara.net/
The Denton County Amateur Radio Association (DCARA) is the official club site for ham radio operators in Denton County, Texas, operating under club call sign W5NGU. Visitors can find information about club meetings, repeater status, license classes, public service events, Field Day activities, and membership details for the North Texas amateur radio community.
http://ben.davies.net/telescope.htm
Ben Davies documents the design and construction of a 12.5-inch Newtonian telescope, covering everything from the equatorial horseshoe mount and mirror flotation cell to motorized collimation and CCD imaging. The site also includes observational work on variable stars, nebulae, galaxies, and spectroscopy, making it a rich resource for serious amateur telescope makers.
https://planetmath.org/
PlanetMath.org is a collaboratively built mathematics encyclopedia where community members write and review entries covering a vast range of mathematical topics, all rendered in LaTeX. Hosted by the University of Waterloo and operated as a nonprofit, it offers both a subject index and alphabetical index, making it a serious reference hub for students, educators, and math enthusiasts.
https://radioring.neocities.org/
The Radio Ring is a Neocities-based webring connecting personal websites whose owners share a love of radio, welcoming both amateur radio enthusiasts and casual fans alike. Built on the onionring framework, it offers simple join instructions and links members together in a navigable loop.
https://grace.umd.edu/~tlaloc/archastro
The official web presence of the Center for Archaeoastronomy, a professional research organization founded at the University of Maryland in 1978, dedicated to the interdisciplinary study of astronomy in ancient and indigenous cultures. Visitors can explore peer-reviewed publications, newsletters, essays on ethnoastronomy, and learn about ISAAC, the international society promoting archaeoastronomy worldwide.
http://oltw.blogspot.com/
Rachel Sussman's project documenting the oldest living organisms on Earth, from ancient chestnut trees to Siberian actinobacteria, combines scientific curiosity with fine art photography. Each post chronicles her travels to find and photograph these extraordinary subjects, paired with reflections on deep time, survival, and the nature of life itself.
http://skymaps.com/
Skymaps.com, created by Kym Thalassoudis, offers free monthly sky maps and star charts in PDF format to help amateur and professional skywatchers explore constellations, planets, and comets. The site also features a curated store with planispheres, star atlases, telescopes, and astronomy books for all skill levels.
https://astronomyedinburgh.org/
The Astronomical Society of Edinburgh has been sharing a love of astronomy since 1924, hosting hybrid in-person and online meetings, observing group sessions, and public talks several times a month. Visitors can explore sky diaries, knowledge articles, beginner observing lists, meteor camera data, and a Messier/Caldwell project archive alongside a live interactive solar system map.