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://hms.sternhell.at/hms.php?country=Austria&lang=English&page=pages%2Fmain
How Many Stars is a long-running international citizen science project now in its 22nd year, dedicated to measuring light pollution and night sky visibility through naked-eye observations submitted by volunteers worldwide. Participants count visible stars in specific regions and submit their reports, contributing to a global dataset tracking the degradation of dark skies over time.
http://collectspace.com/news/news-061209a.html
CollectSPACE covers space history news and milestones, including this detailed article tracking which astronaut became the 500th person to fly into space during the STS-127 shuttle mission in 2009. The site provides a comprehensive numbered list of all 500 spacefarers up to that point, mission by mission, making it a valuable reference for space history enthusiasts.
https://mathwomen.agnesscott.org/women/women.htm
Hosted by Agnes Scott College, this site offers an extensive collection of biographical essays on women mathematicians throughout history, organized alphabetically, chronologically, and even by birthplace with an interactive Google Map. It also tracks prizes, firsts, and current achievements, making it a rich reference for anyone interested in the history of women in mathematics.
https://planetary.chem.tufts.edu/Phoenix/index.html
A page dedicated to NASA's Phoenix Mars Scout Mission, hosted on a Tufts University chemistry server, featuring launch videos including a close-up NASA recording and a team footage from Cocoa Beach in August 2007. It offers a glimpse into the excitement surrounding the Phoenix lander's launch, which went on to study the Martian arctic soil.
http://lowellhighlandsweather.com/
Lowell Highlands Weather is a personal weather station site for Lowell, Massachusetts, delivering live temperature, humidity, wind, and barometric readings powered by WeeWX software. Beyond real-time gauges, the site offers an impressive array of resources including historical climate data, radar and satellite imagery, tropical storm tracking, and local astronomy almanac information.
https://hamexam.org/
HamExam.org has been helping aspiring ham radio operators pass their licensing exams since 2003, offering completely free practice tests and flash cards for Technician, General, and Extra class licenses. The site covers all current FCC question pools and includes account tracking so users can monitor their progress on problem areas.
http://athensarc.org/
The Athens Amateur Radio Club (AARC) of Athens, Texas maintains this site as the hub for local licensed ham operators, featuring repeater information, meeting schedules, emergency preparedness resources, and ARES/NTS documentation. Built and maintained by Harold Melton KV5R, the site also includes links to area repeaters, scanner frequencies, Skywarn weather integration, and a membership roster.
http://butikov.faculty.ifmo.ru/Projects/Collection.html
Created by physicist E. Butikov of IFMO, this collection presents interactive Java applets simulating remarkable three-body gravitational motion problems, including the famous figure-eight periodic orbit and restricted three-body scenarios. It bridges classical Newtonian mechanics and celestial mechanics with hands-on simulations suitable for students and advanced researchers exploring planetary system dynamics.
https://weca.org/
The Westchester Emergency Communications Association (WECA) has been serving the Hudson Valley region through amateur ham radio since 1972, with a base repeater on 147.06 MHz. The site offers an extensive range of resources including APRS live mapping, ARES/RACES emergency communications info, FCC license exam prep, hamfests, local repeater listings, and SKYWARN weather spotting details.
http://rgbrown.org/
Robert G. Brown, a physicist at Duke University, shares an extensive collection of free online textbooks, physics study materials, poetry collections, philosophy essays, and beowulf cluster computing resources. The site is a sprawling intellectual hub covering everything from GPL software tools to metaphysics, all freely licensed under an open public license.