Buying Guides
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Best Reflector Telescopes for Beginners
The most aperture for your money, chosen for a first telescope.
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Best Eyepieces for Each Planet
The focal length to use for Mercury through Neptune, planet by planet.
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Best Celestron Eyepieces
Celestron's eyepiece lines compared, so you can pick the right one for your scope.
Free Resources
Space Printables
Free PDF quizzes and worksheets for kindergarten to adult, with answer keys.
3D Space Models
Spin real maps of the Moon and planets built from NASA data. Find craters, landing sites, the rings of Saturn, Uranus and Neptune and the moons of Jupiter.
Latest
Black holes are not all the same size, and they don’t all form the same way. The types of black…
Massachusetts has a surprisingly solid astronomy scene for a small state packed with traffic, colleges, and weather that enjoys ruining…
North Carolina has a better planetarium scene than most people expect. You’ve got big-city science centers, university-backed domes, and a…
Constellations are patterns of stars that people have named and used for thousands of years. Some are easy to spot,…
Table of contents TLDR The 18th century astronomers who matter most are the ones who turned astronomy into a precision…
Oregon is a good state for astronomy in the same way it’s good for mushrooms: the conditions are often excellent,…
Table of contents TL;DR Jupiter has been visited by flybys, orbiters, and one famous atmospheric probe, and each mission has…
Explore seven notable space rocks that hit Earth — from historic meteorite falls to recent bolide events. This hub summarizes each impact with dates, locations, sizes, and links to full posts that dive into the science, recovery stories, and where fragments ended up, perfect for quick facts or deeper reading.
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