Buying Guides
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Best Telescopes for Viewing Planets
Scopes that show Saturn's rings, Jupiter's bands and the Martian poles.
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Budget Telescopes That Are Sneakily Powerful
Five low-cost scopes that perform well above their price.
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Best Telescopes Under $500
More aperture and steadier mounts in the serious-upgrade price range.
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
Mars rovers have been helping scientists explore the red planet since the 1990s. Even though we can learn a lot…
Astronomy has captured the imaginations of people for centuries. The cosmos has been the inspiration of all kinds of people,…
In 1962, NASA’s Mariner 2 became the first spacecraft to successfully fly by another planet when it passed Venus and…
With our current technology, a trip to Venus would take more than 3 months to make. Even though it is…
Wouldn’t it be cool to walk on top of Saturn’s rings? see the whole planet and the rest of the…
The best telescope under $500 is the Sky-Watcher Heritage 150, a collapsible 6-inch tabletop Dobsonian with the largest mirror in…
What is a Mars Rover? A Mars Rover is a robotic vehicle that was designed to travel through the surface…
Naming conventions in the scientific world can be weird. And sometimes you end up with two different types of objects…
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