Astronomy & Space
396 sites
http://bo.astro.it/~biblio/atlas/atlas-in.htm
Hosted by the Library of the Department of Astronomy in Bologna, this scholarly site guides visitors through a curated collection of historic celestial atlases spanning the 16th through 18th centuries, from Piccolomini's Renaissance star maps to Bode's Uranographia. Created by Davide Neri, a philosopher and physicist, it beautifully bridges the history of science and art through some of the most celebrated astronomical cartography ever published.
https://astromag.co.uk/
AstroMag is an informational astronomy website covering celestial bodies, space weather, gamma-ray bursts, eclipses, and deep-space phenomena in accessible language for general readers. Articles span topics from Jupiter's moons to the Kuiper Belt, making complex astronomical concepts approachable without requiring a scientific background.
http://astro.vaporia.com/start/transientastronomy.html
A detailed reference page from the astro.vaporia.com astrophysics index, covering transient astronomy and the study of short-lived astronomical phenomena such as supernovae, gamma-ray bursts, fast radio bursts, and gravitational wave events. It catalogs major sky surveys like ZTF, Pan-STARRS, and the Rubin Observatory, making it a useful entry point for anyone exploring time-domain astronomy.
http://billsnyderastrophotography.com/
Bill Snyder's astrophotography site showcases an extensive gallery of deep-sky images including nebulae, galaxies, and star clusters captured from his personal and shared observatories in Pennsylvania. The collection includes several NASA Astronomy Picture of the Day (APOD) winners and is organized into detailed categories covering narrowband, RGB, and HaRGB imaging techniques.
https://asteroid.lowell.edu/
Lowell Observatory's Asteroid Observing Tools hub provides professional-grade data mining and observation planning tools for minor planets and comets, powered by the astorbDB database. Researchers and amateur astronomers alike can query orbital parameters, generate ephemerides, identify near-Earth asteroids, and download datasets using interactive tools like AstEph, AstFinder, and QueryBuilder.
https://affy50.tripod.com/Eyepcalc.html
An interactive eyepiece calculator for amateur astronomers that computes magnification and true field of view based on telescope focal length and aperture. It includes a comprehensive built-in database of eyepieces from major brands like Celestron, Meade, Pentax, Vixen, and Zeiss, plus support for custom eyepiece data entry.
https://skyhound.com/sh/dso_guide.html
Skyhound's Guide to Deep Sky Objects is a comprehensive reference covering every major category of deep sky objects, from open star clusters and globular clusters to quasars and gravitational lenses. Each section explains what the objects are, how they appear through a telescope, and highlights notable examples like the Veil Nebula, Einstein's Cross, and the Pleiades.
http://russsscope.net/staxtutorial.htm
A beginner-focused step-by-step tutorial for stacking and processing planetary images using the free software Registax, written by an astrophotographer who uses a Meade DSI Color camera. The guide walks through alignment, optimization, stacking, and wavelet sharpening in plain language, making it accessible to newcomers who find other tutorials too vague.
https://joshworth.com/dev/pixelspace/pixelspace_solarsystem.html
Created by Josh Worth, this site presents a scale model of the solar system where the Moon is reduced to a single pixel, requiring visitors to scroll endlessly through vast empty space to appreciate the true distances between planets. The experience is both humbling and educational, with witty commentary along the way and the ability to toggle between kilometers, miles, AU, and other quirky units of measurement.
http://chebucto.ns.ca/~aa063
Mike Boschat's astronomy page celebrates 60 years of stargazing from Halifax, Nova Scotia, covering lunar, solar, meteor, and noctilucent cloud observations with an impressive collection of Soviet-made telescopes and binoculars. The site includes astro images, SOHO discoveries, links to clear sky clocks, light pollution maps, and a vast collection of astronomy resources alongside the author's work with the Aeronet Sunphotometer at Dalhousie University.