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://wd0hwt.net/
The Metro Area Repeater Association (MARA) operates the WD0HWT repeater system serving the Minneapolis/St. Paul, MN region on 146.25/.85 and 449.800/444.800 MHz. The site covers repeater rules of conduct, system description, history, emergency communications support, and membership contribution details for Twin Cities area amateur radio operators.
https://www.qsl.net/n1bwt/contents.htm
Paul Wade W1GHZ has published his comprehensive Microwave Antenna Book online, covering everything from parabolic dish antennas and horn feeds to electromagnetic field analysis and antenna range measurements. A deep technical reference spanning 13 chapters with downloadable software tools, this is an essential resource for amateur radio operators working in the microwave frequency bands.
http://thehellhole.com/
A detailed German-language educational site covering black holes and singularities, exploring topics from stellar and supermassive black holes to Hawking radiation, mathematical models, and even the theoretical dangers of black holes at CERN. The site draws a fascinating parallel between modern astrophysics and Norse mythology's concept of the Maelstrom, making complex science accessible through storytelling.
http://meteorlab.com/
New England Meteoritical Services (meteorlab.com) is a long-running resource dedicated to everything about meteorites, including identification, appraisal, and high-resolution structural imagery through a companion site covering primary and secondary meteorite structures. The organization has been online since 1994 and served as examiner and appraiser of the historic Huss-Nininger Collection of Meteorites and Tektites, making it a notable reference for both collectors and researchers.
http://ncrg.org.au/
The Northern Corridor Radio Group (NCRG) is an amateur radio club based in Whiteman Park, Perth, Western Australia, operating callsigns VK6ANC, VK6NC, and VK6NE across contests and regular on-air activity. The site covers club meetings, licensing courses, exams, repeater status, construction projects, and events like the annual Hamfest and carboot sale.
https://m1hog.zbm2.com/
Nicolas Pike, callsign M1HOG, documents his journey through amateur radio licensing and builds an impressive collection of construction projects including QRP rigs, homebrew kits, and APRS setups. The site covers special event operating across the UK, Elecraft builds, SDR experimentation, and links to the RepeaterBook app developed by the same operator.
https://ciura.tripod.com/index.html
Steve (KB9JWD) is a ham radio operator and trained weather spotter from Downers Grove, Illinois who built this page to share his twin passions for amateur radio and meteorology. Visitors will find links to SKYWARN spotter gear, the QRZ callsign database, amateur radio practice exams, local radio club pages, and weather resources.
https://n3wnb.tripod.com/
Tim Ingram (N3WNB) of Corry, PA built this ham radio page featuring a callsign lookup tool and a curated collection of links to resources like the ARRL, QRZ, and equipment suppliers. The site also highlights his Yaesu FT-847 rig and includes a local hams email list, giving it a personal community flavor alongside the standard reference links.
https://astromag.co.uk/
AstroMag is an informational astronomy website covering celestial bodies, space weather, gamma-ray bursts, eclipses, and deep-space phenomena in accessible language for general readers. Articles span topics from Jupiter's moons to the Kuiper Belt, making complex astronomical concepts approachable without requiring a scientific background.
https://w9dup.org/
The official site of W9DUP, the DuPage Amateur Radio Club (DARC) based in Illinois, covering club news, membership, Field Day results, hamfests, ARES emergency preparedness, and local amateur radio events. Visitors can find an active club calendar, EchoLink and IRLP info, licensing education resources, and a showcase of the club's 7th-place national Field Day finish.