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://aerith.net/index.html
Seiichi Yoshida's comprehensive comet resource site offers extensive catalogs, weekly bright comet updates, light curves, and thousands of photographs tracking comets from around the world. Yoshida is a notable amateur astronomer who even had a minor planet named after him, and his MISAO project leverages global imagery to detect and track remarkable astronomical objects.
http://nags.net/
NAGS (Norske Amatørgeologers Sammenslutning) is the Norwegian association for amateur geologists, offering a comprehensive lexicon of Norwegian minerals, an index of articles from their geology magazine STEIN dating back to 1973, and listings of geology clubs across Norway. Visitors interested in rocks and minerals as a hobby will find this a rich hub for Norwegian earth science resources and community.
https://milwaukeeastro.org/
The Milwaukee Astronomical Society has maintained this richly detailed site for its membership, featuring multiple observatories, a deep archive of astrophotography spanning decades, and extensive beginner resources covering telescopes, stargazing tours, and celestial objects. With a historic club archive dating back to 1932, seasonal sky guides, variable star projects, and a member image showcase, this is a treasured hub for amateur astronomers in Wisconsin.
https://keeneastronomy.org/
The Keene Amateur Astronomers (KAA) is a New Hampshire astronomy club established in 1957, offering members access to an observatory, star parties, observing events, telescope training, and a member photo gallery featuring stunning shots of comets, auroras, and the Milky Way. The club also highlights community achievements like member Susan Rolke's selection for NASA and ACEAP ambassador programs, making it a rich hub for both beginner and experienced stargazers in the Cheshire County region.
http://astrosurf.com/jordigallego
Jordi Gallego's deep sky astrophotography site showcases stunning images captured since 2008 from his private Fosca Nit Observatory in Àger, Spain, one of southern Europe's darkest sky locations. The site combines aesthetic long-integration imaging with technical depth, including full equipment and processing notes per image, plus a dedicated section for exoplanet transit photometry observations.
http://lists.contesting.com/_3830
The 3830 mailing list archives preserve decades of amateur radio contesting discussion, spanning from 1996 through 2023. Operators and contesters can browse monthly threads or search the full archive to find score postings, contest strategies, and community conversation going back nearly 30 years.
http://big.or.jp/~jh4phw/index-e.html
The personal ham radio homepage of an operator holding multiple callsigns including JH4PHW, JA1CUF, WH0P, and 9V1PW, reflecting activity across Japan and other regions. The site offers links to amateur radio resources, a callbook lookup, and a Japanese ham radio web cluster.
https://www.qsl.net/harc-az
The Hassayampa Amateur Radio Club (HARC) of Arizona maintains this QSL.net-hosted hub for local ham radio operators in the region. Visitors can find club information, meeting details, and resources connecting amateur radio enthusiasts in the Arizona area.
http://qsl.at/
DokuFunk is the world's largest archive dedicated to the history of radio and electronic media, based in Vienna with worldwide membership and over six million objects in its collection. The organization focuses on both broadcast radio and amateur radio history, preserving QSL cards and other radio-related artifacts under the motto 'No future without origins.'
https://astronomy.swin.edu.au/cosmos
COSMOS is a comprehensive astronomy encyclopedia produced by research astronomers at Swinburne University's Centre for Astrophysics and Supercomputing, covering topics from the Planck Length to galaxies for a general but detail-hungry audience. The encyclopedia is an evolving reference used by major astronomy outlets including Universe Today, Astronomy Cast, and Astronomy Picture of the Day, making it a trusted hub for astronomical knowledge.