Buying Guides
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Best Space Books for Kids
28 picks sorted by age, from board books for toddlers to Apollo history for teens.
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Best Books About Mars
The best reads on the Red Planet, for kids and adults.
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Best Eyepieces for Each Planet
The focal length to use for Mercury through Neptune, planet by planet.
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
The Carina Nebula – also known as NGC 3372 – is a large region of interstellar clouds where stars form.…
The Stephan’s quintet – also known as Hickson Compact Group 92 – is a group of five galaxies that are…
The Orion constellation and Orion nebula are two of the most popular celestial objects people enjoy looking at. Especially during…
The race to launch the first manned mission to Mars is on. SpaceX, NASA, and the Chinese National Space Administration…
The best refractor telescope for most beginners is the Celestron StarSense Explorer DX 102AZ, a 102 mm f/6.5 refractor on…
The reflecting telescope was invented over 2 centuries ago. The design is still used to this day and is one…
The refracting telescope was invented over four centuries ago. While the design has been perfected over the years, the general…
What is a meteor? A meteor is a piece of rock, dust and/or metal that has entered Earth’s atmosphere after…
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