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://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.
http://badastronomy.com/index.html
Phil Plait, astronomer and science communicator, built this site to debunk widespread myths and misconceptions about astronomy, from Moon landing hoax claims to equinox egg-balancing folklore. With sections covering movies, news, TV, and bite-sized astronomy lessons, it is a rich resource for anyone wanting to separate cosmic fact from fiction.
https://fossilguy.com/
Run by Jayson Kowinsky, FossilGuy.com is a comprehensive guide to fossil hunting and paleontology featuring field trip reports, fossil identification sheets, prehistoric animal profiles, and interviews with professional paleontologists. With content spanning from Megalodon teeth to trilobites to dinosaur news, it's a richly detailed resource for both amateur collectors and serious paleo enthusiasts.
http://audible.transient.net/archive
The Music Electronics µArchive is a long-running reference hub for DIY guitar effects and audio electronics, offering schematics archives, FAQs, and curated links to the best resources on the web. Highlights include a downloadable schematics archive, guides on tube amplifiers and transistor identification, and an Electro-Harmonix parts sheet for builders working with vintage pedal components.
http://theastropages.com/
The @stro Pages is a long-running amateur astronomy hub offering astrophotos, articles, telescope making guides, an observer's log, and a San Diego stargazing calendar. Packed with community features like discussion boards, a monthly newsletter, and links to deep-sky objects, it serves both beginners and experienced skywatchers.
http://animalinfo.org/
Animal Info is a comprehensive reference site dedicated to rare, threatened, and endangered mammals around the world, offering detailed species profiles covering biology, ecology, habitat, and conservation status. Visitors can browse by species group, search an alphabetical index of common and scientific names, or explore by country to discover biodiversity and population data for hundreds of at-risk animals.
https://qsl.net/w4sat/antenna.htm
Antenna Elmer is a comprehensive ham radio antenna reference covering dipoles, folded dipoles, ground planes, beams, and vertical antennas for HF, VHF, and UHF frequencies. Visitors can design their own antennas using calculators and conversion tools, with guides covering coax efficiency, frequency scaling, and even a creative 'fan-tenna' built from a household fan.
https://excaliburmineral.com/meteorite.htm
Excalibur Mineral Corporation offers a detailed sales catalog of meteorites and tektites, listing specimens by name, find date, locality, weight, and price. The catalog includes rare pallasites, chondrites, and scientifically documented samples with SEM imagery and quantitative chemistry, making it a destination for serious collectors.
https://wsjt.sourceforge.io/wsjtx.html
WSJT-X is the official home page for a suite of weak-signal communication software developed by Joe Taylor (K1JT) and the WSJT Development Team, supporting digital modes like FT8, FT4, JT65, WSPR, and more. The site provides user guides in multiple languages, release notes, and technical documentation for operators pursuing EME moonbounce, meteor scatter, and other extreme weak-signal amateur radio contacts.
http://smallwonderqrp.blogspot.com/
K.P.S. Kang's blog dedicated to QRP (low-power) radio building, featuring homebrew transceiver projects, circuit schematics, and PCB layouts for minimalist radio construction. Posts cover topics like speech processors, SSB transceivers, and the FIREO low-power transceiver design, making it a useful resource for amateur radio homebrewers.