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://maps.seds.org/Const/const_family.html
Hosted on the SEDS (Students for the Exploration and Development of Space) server, this reference page catalogs the traditional constellation families of the night sky, grouping constellations like the Ursa Major family, the Zodiac, and the La Caille southern sky instruments. Each constellation entry links to deeper information, making it a useful guide for amateur stargazers learning to navigate the celestial sphere.
https://astromag.co.uk/
AstroMag is an informational astronomy website covering celestial bodies, space weather, gamma-ray bursts, eclipses, and deep-space phenomena in accessible language for general readers. Articles span topics from Jupiter's moons to the Kuiper Belt, making complex astronomical concepts approachable without requiring a scientific background.
http://cometography.com/lcomets/2006p1.html
Gary W. Kronk's Cometography provides a detailed scientific profile of Comet C/2006 P1 (McNaught), covering its discovery, orbital calculations, and observer reports from around the world. The page includes historical highlights of the comet's brightness predictions, perihelion data, and observation logs with magnitudes and coma measurements, along with photographs taken at Paranal Observatory.
http://sffma.net/
The South Florida FM Association (SFFMA) is a Miami-area amateur radio club operating multiple repeaters across the region, with real-time emergency status information and a live audio feed of their 147.000 MHz repeater. The site includes repeater listings, meeting schedules at the Miami-Dade EOC, member resources, and photo galleries of their tower and equipment installations.
https://plaws.net/
Peter Laws has maintained this personal page since 1994, with amateur radio as its clear centerpiece, including newsletters from the University of Arkansas Amateur Radio Club dating back to 1992 and numerous presentations and videos on topics like satellites, DXLab, and outdoor warning sirens. The site also touches on scanning, trains, and AI, but the depth of ham radio content spanning three decades makes it a genuine archive for radio enthusiasts.
https://rdelsol.com/
Rancho Del Sol Observatory is a personal astronomy site featuring articles and updates about space exploration, including NASA's Mars rover Perseverance and planetary science topics like Uranus. The site blends historical context about astronomy's milestones with news-style posts covering recent developments in space exploration.
https://www.qsl.net/in3vrr
Roberto Vendrame (IN3VRR) out of Bolzano, Italy offers LOGvrr, a freeware amateur radio logging suite featuring a logbook, international callbook with 1.8 million entries, and PacketCluster support. The site provides free downloads of the software in ARJ archives, ISO disc images, and supporting utilities for ham radio operators managing QSOs and LoTW confirmations.
![This Dynamic Earth--Contents [USGS]](/screenshots/15975.webp)
https://pubs.usgs.gov/gip/dynamic/dynamic.html
Published by the U.S. Geological Survey, this online edition of 'This Dynamic Earth' offers a comprehensive exploration of plate tectonics, from historical perspectives to modern understanding of mantle plumes and unanswered geoscientific questions. Written by W. Jacquelyne Kious and Robert I. Tilling, it covers the full text of the original 1996 print book and links to interactive companion resources including maps of volcanoes, earthquakes, and crustal movements.
http://swrrc.org/
The Southwest DMR Radio Club (SWRRC) appears to be an organization dedicated to DMR (Digital Mobile Radio) amateur radio communications in the southwestern region. The site serves as a hub for club members and ham radio enthusiasts interested in digital radio modes and repeater networks.
https://livermoreark.org/
The Livermore Amateur Radio Klub (LARK) is a nonprofit club founded in 1959 serving the Tri-Valley area of California, affiliated with the ARRL and open to both licensed and unlicensed members. The site covers club membership, FCC licensing and testing sessions, net schedules, newsletters, and emergency communications support for local cycling events.