Buying Guides
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Space Jewelry Made of Real Space Rocks
Twelve pieces made with real meteorite you can wear.
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Best Celestron Eyepieces
Celestron's eyepiece lines compared, so you can pick the right one for your scope.
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Best Telescopes for 10-Year-Olds
Easy, sturdy scopes for kids ten to fourteen who are ready for the real thing.
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.
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Russia’s astronomers keep showing up at the exact moment physics turns a corner. The first atmosphere ever found on another…
Table of Contents Seven stars, one shape everybody already knows how to find, and almost nobody can name. That’s the…
Picture an asteroid that never catches up to Jupiter and never falls behind. It just hangs there, locked 60 degrees…
Oregon has sent a surprisingly large slice of itself to orbit. Not a NASA field center, no rocket factory, no…
Italy has put ten of its citizens past the edge of space. That number is smaller than you’d guess for…
A red giant is what a Sun-like star becomes when it runs out of hydrogen in its core, swells up,…
NASA has sent nine spacecraft past or around Jupiter, and a tenth is on its way right now. Some only…
Ask “who was the first Malaysian in space” and most answers stop at one name. The fuller story has four…
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