Science & Nature
1439 sites
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- Astronomy & Space (396)
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- Biology (79)
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- Amateur Radio (682)
- Electronics (47)
https://qsl.net/w0dk
The Boulder Amateur Radio Club (BARC) is a 501c non-profit educational organization based in Boulder, Colorado, offering monthly meetings, a weekly Wednesday night net, and an award-winning newsletter called BARC's Bark. The site covers club activities including Field Day, repeater information, VE testing, scholarships, and a junior ham program for newcomers to the hobby.
https://gadgeteer.us/
Bill Meara's Gadgeteer site is a celebration of electronic homebrewing, centered on ham radio projects including DSB and SSB rigs, tube receivers, and QRP builds alongside a popular podcast called SolderSmoke. The site also ventures into amateur astronomy, model rocketry, and kite aerial photography, making it a rich destination for technically adventurous hobbyists.
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://company7.com/
Company Seven is a long-established astro-optics retailer and resource hub based in Laurel, Maryland, serving both amateur and professional astronomers with telescopes, binoculars, rare optical instruments, and expert consultation. Notable for its involvement with NASA missions including the Hubble Space Telescope Repair and the James Webb Space Telescope, this site blends a brick-and-mortar showroom presence with a deep online resource for the astronomy community.
https://fy5ke.org/
FY5KE is the official site of the Radio Amateur Club de Kourou in French Guiana, a club known for participating in major international contesting events like CQ WW SSB and ARRL DX SSB dating back to 2000. Visitors can explore the club's station details, QSL information, 50 MHz beacon, and an extensive archive of contest results spanning nearly two decades.
https://www.qsl.net/na4sh
The Nash County ARES (Amateur Radio Emergency Service) is a volunteer group serving Nash County and Rocky Mount, North Carolina by providing emergency communications during disasters like hurricanes, floods, and tornadoes. The site covers their weekly nets on local repeaters, links to weather resources, and connections to state and national ARES organizations.
http://pictures.ed-morana.com/
Ed Morana's personal astronomy photo and video archive documents rare celestial events including total solar eclipses, Venus and Mercury transits, ISS transits, asteroid occultations, and the Northern Lights. The collection spans events from 2006 through 2024, with time-lapse composites and an Android app for ISS transit prediction making it a genuinely useful resource for amateur astronomers.
![en:start [Virtual Moon Atlas Version 9.0]](/screenshots/39586.webp)
http://ap-i.net/avl/en/start
Virtual Moon Atlas (VMA) is a free, feature-rich lunar observation and study program for Windows and Linux, now in its ninth major version after over two decades of development. Downloaded nearly 2 million times worldwide, it has been used by the European Space Agency, CNRS research professors, and even to help prepare the Chandrayaan 1 lunar mission.
http://acaoh.org/index.php
The Astronomy Club of Akron (ACA) is a 501(c)3 non-profit serving Summit County, Ohio, with star parties, solar observing events, monthly meetings featuring guest speakers, and access to a 16-inch observatory telescope. The site hosts event schedules, member astrophotos, newsletters, membership info, and links to live solar and lunar data resources.
http://midlandsastronomyclub.org/
The Midlands Astronomy Club is a 501(c)(3) non-profit based in Columbia, South Carolina, bringing together amateur astronomers for regular meetings, dark-sky observing sessions, astrophotography, and community outreach. The site features a meeting calendar, DIY projects, a member gallery, moon phase tools, and links to affiliated regional astronomy clubs across South Carolina.