Buying Guides
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Astronomy Gifts for Adults
Gift ideas for the stargazer or space fan who has everything.
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Best Star Diagonals
Mirror or prism, 1.25 or 2 inch: the right diagonal for your scope.
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Best Books About Mars
The best reads on the Red Planet, for kids and adults.
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
Classifying stellar objects can be tricky. There are billions and billions of stars out there in the universe and every…
Let’s face it. The eyepieces that are bundled with most telescopes are rarely good. Including basic eyepieces is one of…
The Apollo 11 mission was a historic moment like no other. More than 53 million American households and over 650…
Our Sun is the only star that we know of that has a planet with the ability to support life.…
It might be hard to notice just by looking at them, but Mercury and Mars share many things in common…
Imagine you are in the 1960s analyzing the data of a brand-new radio telescope. One of the first things you…
Telescopes seem fairly easy to use, right? you simply point it at the sky, look through the eyepiece, maybe adjust…
If you were to stand at night right at the north pole of the planet, first of all, you would…
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