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://kyham.info/
KYHAM.INFO serves as the central hub for Kentucky amateur radio operators, providing emergency net frequencies, section emergency plans, hamfest listings, and Skywarn severe weather resources. Maintained by Dan Rubino KD9CHL, this resource connects Kentucky hams with local district information, traffic manager reports, and the KYHAM groups.io community.
http://heavens-above.com/
Heavens-Above, developed by Chris Peat, provides real-time satellite tracking and pass predictions customized to your exact location, covering the ISS, Starlink, Hubble, and hundreds of other spacecraft. Beyond satellites, the site offers interactive sky charts, solar eclipse data, comet and asteroid tracking, and deep space mission information, making it an essential tool for backyard astronomers and satellite spotters alike.
http://rmbr.nus.edu.sg/
The archived web presence of the Raffles Museum of Biodiversity Research (RMBR) at the National University of Singapore, now preserved after the museum was renamed and relocated as the Lee Kong Chian Natural History Museum in 2014. Visitors can explore decades of biodiversity research, newsletters, symposium records, and an extensive 19th-century fauna of Singapore catalog with over 1,700 taxonomic entries.
https://chicagofmclub.org/
The Chicago FM Club (CFMC) is a Chicagoland amateur radio club established in 1965 with over 150 members, operating five repeaters and hosting nightly nets, monthly fox hunts, and the annual Radio Expo ham fest. The site covers club membership, FCC exam testing, public service events, and social gatherings for hams in the greater Chicago area.
http://theastropages.com/glossary/index.htm
The @stro Pages is a comprehensive amateur astronomy resource featuring a full A-Z glossary of astronomical terms, astrophotos, articles, and an observer's log focused on the San Diego area. With sections covering telescope making, deep-sky objects, and a local astronomy calendar, it serves as a rich hub for stargazers of all experience levels.
https://qsl.net/wa5ufh
Hosted on QSL.net, a hub for amateur radio operators, this page belongs to callsign WA5UFH and uses a frames-based layout typical of classic ham radio personal sites. While the content is inaccessible without frames support, the QSL.net hosting and callsign-based URL strongly indicate an amateur radio enthusiast's personal station page.
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.
http://cbat.eps.harvard.edu/index.html
The Central Bureau for Astronomical Telegrams (CBAT), hosted at Harvard University since 1966, is the official IAU clearinghouse for announcing new astronomical discoveries including comets, novae, supernovae, and other transient celestial events. Visitors can browse online IAU Circulars, subscribe to discovery feeds, explore lists of supernovae and comets, and learn how to submit their own astronomical observations.
http://qrotec.com/
Ray Connin (KB8VU) runs QRO Technologies out of Bryan, Ohio, a site dedicated to amateur radio and high-power RF amplifier technology. The page is associated with a long-running operation dating back to 1996, suggesting deep involvement in the ham radio community.
http://findu.com/
findU is a massive 58GB database archiving APRS (Automatic Packet Reporting System) data including weather observations, position reports, vehicle tracking, and telemetry from amateur radio operators worldwide. The site powers real-time weather forwarding to NOAA and the National Weather Service, and even tracks amateur radio payloads aboard the International Space Station.