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://shallowsky.com/moon/moonlinks.html
A comprehensive curated link collection for amateur lunar observers, gathering moon maps, photographic atlases, observing guides, and software tools from across the early web. Part of the broader Hitchhiker's Guide to the Moon project at Shallow Sky, it serves as an invaluable jumping-off point for anyone wanting to study the moon's features in depth.
https://n4gn.com/sr
Tim Totten (N4GN) built this dedicated archive for the 1997 BS7H amateur radio DXpedition to Scarborough Reef, one of the rarest DXCC entities in the world. Visitors can search the expedition's QSO log, review operating frequencies and bulletins, meet the operating team, and explore QSL card information from this historic contact event.
http://sguisard.astrosurf.com/
Stéphane Guisard's personal astrophotography showcase, 'Los Cielos de América,' features stunning celestial imagery captured from the Americas and beyond. The image-heavy site is a visual feast for astronomy enthusiasts, presenting the night skies through the lens of a dedicated and skilled astrophotographer.
http://www2.rdrop.com/users/billmc
Bill McFadden's eclectic homepage covers a surprisingly deep range of radio-related interests, from pirate radio station KHOG and FCC licensing FAQs to scanner frequencies, shortwave charts, and wireless microphone regulations. Alongside the radio content, visitors will find loudspeaker design resources, audio editing scripts for Cool Edit Pro, and home automation links, making it a genuine hobbyist's workbench online.
http://wxqa.com/
The Citizen Weather Observer Program (CWOP) is a public-private partnership that collects weather data from over 7,000 citizen-operated stations across North America, feeding real-time observations to NOAA and dozens of government agencies. Visitors can join the network, check data quality, view maps and displays, and access resources for setting up their own personal weather stations.
http://bitxhacks.blogspot.com/
BITX Hacks is a technical blog by Pete N6QW dedicated to modifications, hacks, and experiments with the BITX40 and uBitx transceiver boards. Posts cover hands-on hardware tweaks like display upgrades, inline fuse wiring, and external linear amplifier controls, making it a practical resource for amateur radio homebrewers.
https://qsl.net/vqs
The Virginia QRP Society (W4VQS) is a free amateur radio club focused on QRP low-power operation, welcoming members without any membership fees. Maintained by webmaster Jeff (K4JTN), the site offers club information and links for Virginia-area ham radio enthusiasts interested in low-power communications.
http://robgendlerastropics.com/
Robert Gendler's astrophotography site showcases a stunning image gallery of astronomical objects alongside essays on 140 popular celestial subjects and a beginner's astronomy primer. The site also features technical articles on advanced imaging techniques like hydrogen alpha color imaging and Photoshop mosaics, plus information about Gendler's published books on astronomy.
http://para.buxcom.net/
The Philadelphia Area Repeater Association (PARA) maintains this club site listing their extensive network of repeaters across the greater Philadelphia region, including Valley Forge, Camden, and surrounding areas. Visitors can find club history dating back to 1971, officer listings, membership info, and links to ARRL and FCC resources for ham radio operators.
https://www.qsl.net/bharc
Hosted on QSL.net, this site belongs to BHARC, likely a local amateur radio club or ham radio organization based on the domain structure. The page uses frames, suggesting it contains club information, resources, or member content typical of ham radio community sites from the early web era.