Buying Guides
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Best Travel Telescopes
Backpack, carry-on and smart scopes compared by weight and what they show.
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Best Telescopes Under $500
More aperture and steadier mounts in the serious-upgrade price range.
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Best 50mm Telescopes
Small, light starter scopes for the Moon and the brightest planets.
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, volcanoes and landing sites.
Latest
Most “beautiful star names” lists give you a wall of forty names dumped into “boy” and “girl” buckets with a…
The Local Group is the patch of universe we happen to live in: a gravitationally bound cluster of galaxies roughly…
Table of Contents How Many Types of Nebulae Are There? Five, if you’re being precise about it: emission, reflection, dark,…
TLDR NASA’s active astronaut corps hovers around 40 people at any given time, drawn from a pool that’s grown to…
Table of Contents TLDR Seven astronauts carry a real Connecticut connection: Jack Hathaway (South Windsor, currently aboard the ISS on…
Mars, Jupiter, and Titan get most of the attention, and they’ve earned it. But the solar system has more than…
Roughly fifty spacecraft have aimed themselves at Mars since 1960. About half of them made it. That failure rate alone…
TLDR Five NASA missions have laid eyes on Ganymede so far — Pioneer 10 and 11 (1973-74), Voyager 1 and…
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