Astronomy & Space
390 sites
http://parallaxinstruments.com/
Parallax Instruments, Inc. is a small business founded in 1991 that manufactures precision astronomical telescopes, German equatorial mounts, rotating tube rings, aluminum tubing, and observatory piers. Their product lineup includes large-aperture Newtonians, Dall-Kirkham Cassegrains, and custom-built instruments crafted in a fully equipped machine shop for serious amateur and professional astronomers.
https://skokievalleyastronomers.org/
The Skokie Valley Astronomers was a beloved Illinois-based amateur astronomy club that ran for over 50 years, hosting public meetings, presentations, and events dedicated to stargazing and sky watching. The site serves as a farewell archive and resource hub, featuring newsletters, images, and links to other local astronomy clubs for members and enthusiasts to continue their passion.
https://eclipse.gsfc.nasa.gov/SEgoogle/SEgoogle2001/SE2017Aug21Tgoogle.html
Fred Espenak's NASA Eclipse Website hosts an interactive Google Maps tool showing the precise path of totality for the August 21, 2017 total solar eclipse, including central line, northern and southern limits, and 10-minute interval markers. Hosted by NASA's Goddard Space Flight Center, the page provides detailed data on greatest eclipse, greatest duration, lunar limb profiles, and eclipse weather resources.
http://allthesky.com/
Created by Till Credner and Sven Kohle, AllTheSky.com is a stunning astrophotography gallery spanning comets, nebulae, galaxies, constellations, aurora borealis, and atmospheric phenomena. The site offers an impressive breadth of celestial imagery including nightscapes, 360-degree views, live all-sky feeds, and articles that make it a rich destination for astronomy enthusiasts.
https://vcas.org/
The Ventura County Astronomical Society (VCAS) brings together stargazers of all ages in the Thousand Oaks, California area through monthly lectures, star parties, Messier marathons, and community outreach events. Members enjoy access to loaned telescopes, remote viewing field trips, and a quarterly astronomy magazine, making this a rich hub for both beginner and experienced amateur astronomers.
https://cbastro.org/
The Center for Backyard Astrophysics (CBA) is a global citizen-science network of amateur astronomers using small telescopes to conduct photometric studies of cataclysmic variable stars. The site hosts science results, publications, data submission guidelines, observer resources, and a worldwide station map connecting contributors from Belgium to Indiana.
http://atm-workshop.com/
John D. Upton's comprehensive resource for amateur telescope makers (ATMs) covers tips, techniques, and projects spanning optics grinding, metalworking, woodworking, electronics, and astrophotography. Built over two decades of hands-on experience, the site documents the rewarding crossover hobby of crafting your own telescopes and specialized astronomy accessories from scratch.
http://wordwizz.com/pwrsof10.htm
Bruce Bryson's 'Quarks to Quasars' takes visitors on a visual journey through the universe using powers of ten, spanning from subatomic particles smaller than 10^-18 meters to the observable cosmos at 10^26 meters. With nearly 200 pages of original drawings and images, each step in scale reveals ten times more or less of the universe, making it a deeply immersive and educational exploration of cosmic scale.
http://pretoria-astronomy.co.za/
The Pretoria Centre of the Astronomical Society of Southern Africa serves both amateur and professional astronomers interested in the unique southern hemisphere skies, offering membership, newsletters, observing events, and deep-sky imaging resources. Visitors can find comet reports, lunar eclipse photography, nebula images, telescope-making tips, and guides to the ASSA 100 deep-sky objects list.
https://mo-www.cfa.harvard.edu/OWN/about.html
MicroObservatory is an internet-controlled robotic telescope network developed by scientists and educators at the Harvard-Smithsonian Center for Astrophysics, designed to let students across the country capture real deep-sky images from their classrooms. Visitors can control telescopes remotely, analyze astronomical images, and access educational projects tied to NASA's educational mission.