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://www.qsl.net/cwra
The Central Wisconsin Repeater Association (CWRA) is a ham radio club based in the Madison/Baraboo area that owns and operates two 2-meter FM repeaters serving southern Wisconsin. Founded over 35 years ago, the site offers membership information, newsletters, board of directors details, and resources like FCC license renewal links, with a notable emphasis on public safety and storm watch coordination.
https://valleystargazers.com/
The Shenandoah Valley Stargazers (SVS) is an amateur astronomy club based in the Staunton, Waynesboro, and Harrisonburg, Virginia area, offering observing events, astrophotography, education, and community outreach. The club operates its own observatory in Stokesville, VA and welcomes families, groups, and the public to explore the night sky together.
http://vdazone.org/hamlinks.html
Compiled by the Northern Berkshire Amateur Radio Club (NoBARC), this extensive link directory covers virtually every corner of amateur radio, from ARRL resources and antenna plans to ATV, SSTV, antique radios, and weather satellite imagery. With over 1,300 curated links organized into dozens of categories, it serves as a comprehensive jumping-off point for ham radio operators of all interests.
https://jrm.phys.ksu.edu/Scouts/Space-AstroLinks.html
Compiled by Vincent Needham at Kansas State University, this extensive link directory covers virtually every corner of space and astronomy on the web, from advocacy groups and industry players to SETI projects and digital sky surveys. With over 270 curated links organized into categories like amateur rocketry, space missions past and future, telescopes, and planetary science, it serves as a thorough reference hub for space enthusiasts and researchers alike.
https://qsl.net/a/aa6j//radiomb
Created by AA6J Bill Jeffrey, an Assistant Scoutmaster and Merit Badge Counselor from San Diego, this site provides study notes and guidance to help Boy Scouts earn the Radio Merit Badge without needing a ham license or Morse code knowledge. It covers all eight requirements for the badge and includes links to additional resources, updated for the 2002 BSA requirements.
https://skywatch.brainiac.com/astroland
Uncle Rod Mollise's Astro Land is a long-running amateur astronomy hub hosted at 'Chaos Manor South,' packed with telescope guides, equipment reviews, CCD and webcam imaging tips, and resources for Schmidt-Cassegrain telescope users. Rod also runs the Mobile Astronomical Society and offers a free Used CAT Buyer's Guide, making this a genuinely useful stop for backyard astronomers of all levels.
https://kb6nu.com/
Dan Romanchik (KB6NU) runs this long-running amateur radio blog covering news, equipment reviews, licensing study guides, and community happenings in the ham radio world. Notable features include No Nonsense study guides for Technician, General, and Extra class licenses, along with commentary on everything from MFJ equipment to repeater guides.
http://phy6.org/stargaze/Sintro.htm
Created by Dr. David P. Stern, 'From Stargazers to Starships' is a comprehensive web-based textbook covering astronomy, Newtonian mechanics, the Sun, and spaceflight at a high school level. The site includes glossaries, timelines, Q&A sections, lesson plans, and supplementary materials for educators, making it a rich self-contained learning resource with a strong historical perspective.
https://cosmotography.com/images/rc.html
R. Jay GaBany's Blackbird Observatory page details the technical setup behind his acclaimed astrophotography work, including a half-meter Ritchey-Chretien telescope, professional CCD cameras, and two remote observatory locations in New Mexico and the California Sierra Nevada. The site is a fascinating window into serious amateur deep-sky imaging, covering instrumentation, elevation advantages, and the evolution of the observatory from 2005 through 2014.
https://projectpluto.com/
Project Pluto offers a suite of astronomical software tools for both amateur and professional astronomers, including the well-known Find_Orb orbit determination software, Sat_ID for identifying artificial satellites, and the Guide star charting DVD. The site provides free online versions of many tools alongside downloadable software, C/C++ source code, and reference resources like lunar phase calendars and asteroid observer tools.