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://newastro.com/
Ron Wodaski's companion site to his book 'The New Astronomy' offers a comprehensive online guide to CCD astrophotography, covering everything from focusing and exposure to advanced image processing. With ten full chapters available online by subscription, plus sample content and a community discussion group, it serves as a practical resource for beginner and intermediate amateur astronomers.
https://sagan.diletante.net/
A fanlisting dedicated to the beloved astronomer and science communicator Carl Sagan, gathering fans from around the world who admire his work and legacy. Built and maintained by a fan known as C.:., the site includes information about Sagan, membership listings, and links to related resources.
https://particleadventure.org/
The Particle Adventure is an award-winning interactive guide to particle physics from the Particle Data Group at Lawrence Berkeley National Laboratory, covering quarks, neutrinos, the Higgs boson, dark matter, antimatter, and particle accelerators. Available in over a dozen languages and designed for students and curious minds alike, it offers classroom activities, particle history charts, and deep dives into the fundamental building blocks of the universe.
https://ncdxf.org/
The Northern California DX Foundation (NCDXF) is a charitable organization founded in 1972 that provides financial support for DXpeditions to rare DXCC entities around the world. Visitors can explore funded expeditions, apply for grants, learn about the NCDXF-IARU Beacon Project, and find resources for the amateur radio DX community.
https://astropix.com/
Jerry Lodriguss has spent nearly 50 years photographing the night sky, and AstroPix collects his expertise into a comprehensive resource covering everything from smartphone star trails to deep-sky nebulas and total solar eclipses. Visitors will find equipment reviews, image processing tutorials, observing guides, and stunning astrophotos of planets, comets, galaxies, and celestial events spanning decades of film and digital work.
http://skymaps.com/
Skymaps.com, created by Kym Thalassoudis, offers free monthly sky maps and star charts in PDF format to help amateur and professional skywatchers explore constellations, planets, and comets. The site also features a curated store with planispheres, star atlases, telescopes, and astronomy books for all skill levels.
https://cadcwww.dao.nrc.ca/
The Canadian Astronomy Data Centre (CADC) is an official Government of Canada research facility that archives and provides access to astronomical data for scientists and researchers. Hosted by the National Research Council of Canada, it serves as a centralized repository for observational astronomy data collections.
https://qsl.net/wa5mc
The Atchafalaya Amateur DX Association Inc. (AADXA) is a ham radio club based in Amelia, Louisiana, with a full organizational presence including officer listings, membership applications, meeting minutes, newsletters, and repeater information. Developed by Guy R. Morrison (WA5MC), the site also features field day photos, a guestbook, and club constitution documents, making it a solid hub for local amateur radio enthusiasts.
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.
https://ifmarc.org/
IFMARC is the official web presence of the Independence FM Amateur Radio Club based in Independence, Missouri, home of the 147.09+ repeater carrying the call sign of late club member Marcell Kurbin (W0TOJ). The site lists club officers, meeting details at St. Mark's United Methodist Church, and contact information for joining the club's email list.