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://nefariousplots.com/figures/4
An interactive data visualization called 'The Population of Space' charts every human spaceflight from Yuri Gagarin in 1961 through 2014, grouping missions by launch vehicle and coloring them by historical era. Created in honor of the 45th anniversary of Apollo 11, it offers a fascinating way to explore how long humans have spent in space, which nations sent them, and how the shift from Soviet stations to the International Space Station shaped our continuous presence off-world.
https://projectpluto.com/
Project Pluto offers a suite of astronomical software tools for both amateur and professional astronomers, including the well-known Find_Orb orbit determination software, Sat_ID for identifying artificial satellites, and the Guide star charting DVD. The site provides free online versions of many tools alongside downloadable software, C/C++ source code, and reference resources like lunar phase calendars and asteroid observer tools.
https://physics.weber.edu/carroll/Wonder/extinctions.htm
A focused educational page from Weber State University exploring the history of mass extinctions, covering all five major extinction events across 600 million years of Earth's history. Complete with graphs, fossil imagery, and detailed descriptions of each extinction's causes and casualties, it makes paleontological science accessible and visually engaging.
http://dimensions-math.org/Dim_E.htm
Dimensions is a freely available two-hour mathematical film by Jos Leys, Étienne Ghys, and Aurélien Alvarez that guides viewers through nine chapters building up to the concept of the fourth dimension. Released under a Creative Commons license, it offers commentary and subtitles in over a dozen languages, making advanced mathematical visualization accessible to a global audience.
https://qsl.net/w6sd
The San Fernando Valley Amateur Radio Club (SFVARC) maintains this archive of monthly board meeting notes spanning 2021 through 2024, offering a detailed record of club governance and activities. Visitors can also browse club inventory lists with photos and Field Day maps, making it a practical resource for current and prospective members.
https://owlsp.com/
Wesley Luginbyhl's storm chasing archive spans over two decades of tornado outbreaks, supercells, and severe weather events across Texas, Oklahoma, Kansas, and beyond. Packed with chase accounts organized by date and location, plus landscape photography, aurora shots, and live chase cam resources, this site is a compelling record of life on the storm-chasing circuit.
http://k1kkm.org/
K1KKM is a personal amateur radio operator's site identified by the distinctive callsign in the domain name. Though the page text is minimal, the callsign format strongly suggests a ham radio enthusiast sharing their station and hobby activities.
https://qsl.net/sv2ael/greekhamail.htm
Created by Greek amateur radio operator SV2AEL, this page is a comprehensive alphabetical directory of over 580 email addresses for licensed ham radio operators across Greece, organized by callsign prefix. A unique and practical reference for the Greek ham radio community, it covers all SV, SW, SX, and SZ callsign districts and is maintained as a personal initiative by Savas Pavlidis.
https://qsl.net/scoutradio
Scout Radio appears to be a site dedicated to amateur radio activities within the Scouting community, combining two classic youth and hobbyist traditions. The image-heavy layout and QSL.net hosting strongly suggest this is a ham radio club or station operated by or for Scout groups.
https://kb9ocq.tripod.com/CW
A reference page by KB9OCQ dedicated to Morse code (CW) abbreviations and Q-signals used in amateur radio communication. It covers everything from common shorthand like TU and B4 to a full table of Q-codes with their question and statement meanings, making it a handy quick-reference for ham radio operators.