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://dxer.com/
DXer.com is a site centered around amateur ham radio and CW (Morse code) operation, catering to DXers who pursue long-distance radio contacts. The page appears minimal but targets a niche community of ham radio enthusiasts with an interest in DX chasing.
https://moonconnection.com/
MoonConnection.com is a comprehensive lunar reference covering moon phases, eclipses, Apollo missions, tides, and the moon's gravitational effects, complete with interactive tools and a monthly phases calendar. It also offers practical guides on fishing, hunting, and night photography by moon phase, plus companion mobile apps for tracking lunar cycles on the go.
http://scarc.com/
SCARC appears to be the website for an amateur radio club, offering resources and information for ham radio enthusiasts in its region. Club-based amateur radio sites like this typically feature member info, repeater details, licensing resources, and local on-air event announcements.
https://atn-tv.org/
The Amateur Television Network (ATN) is a national organization for ham radio operators interested in amateur television transmission, with regional chapters across Arizona, California, Colorado, and beyond. The site features decades of meeting photos, repeater coverage maps, membership rosters, streaming events, and information on digital ATV technology.
https://chemguide.co.uk/index.html
Chemguide, created by Jim Clark, is a comprehensive chemistry reference site aimed at helping students aged 14 through A-level understand topics ranging from atomic structure and bonding to organic reaction mechanisms and physical chemistry. Covering major UK exam syllabuses including GCSE, CIE Cambridge International, and Edexcel, it serves as an authoritative free study aid with deep topic coverage across all major chemistry disciplines.
http://icstars.com/HTML/SolarSection/HAlpha/OBSERVINGTHESUNHAlpha1.html
David Knisely's comprehensive H-Alpha handbook covers solar observation in remarkable technical depth, with dedicated sections on prominences, sunspot group classification, solar flares, and a full glossary of H-Alpha terminology. Part of the larger ICSTARS Astronomy site, this resource is a serious reference for amateur astronomers interested in observing the sun through hydrogen-alpha solar filters.
http://www.actonastro.com/
ActonAstro is a hobbyist astronomy site built by a California stargazer who went from a beginner 60mm refractor to a full backyard observatory with a Celestron 9.25-inch scope. Visitors will find astrophotography galleries, equipment reviews, polar alignment guides, and personal weather station data, all rooted in a genuine passion for the night sky.
https://westislandweather.com/
West Island Weather Station has been monitoring coastal conditions near the Cape Cod Canal in Buzzards Bay, Fairhaven, Massachusetts since 1992, offering live bay cams, tide information, and detailed monthly weather logs. The site also chronicles notable regional weather events including Hurricane Bob 1991, the Blizzard of '78, and the Buzzards Bay Oil Spill of 2003, alongside an archive of over 10,000 photos.
http://users.erols.com/njastro/orgs/ndsos.htm
The National Deep Sky Observers Society (NDSOS) is a worldwide amateur astronomy organization founded in 1976, dedicated to those who observe galaxies, nebulae, and star clusters. Members receive a quarterly journal called Betelgeuse, access to professional astronomical databases, and networking with fellow deep sky enthusiasts across the globe.
https://targetarea.net/
Scott Blair's personal site, active since 1997, focuses on storm chasing and severe weather photography, featuring copyrighted images of tornadoes and violent storms captured in the field. The site also honors Eric Nguyen, a fellow storm observer and meteorologist, with a link to a memorial scholarship supporting future weather scientists.