Build Your Own Universe With National Geographic!

Build your own universe by creating planets to orbit your star. You choose the type of planet, from a gas giant to a dust planet, and then decide its atmosphere and mass.

If your solar system is just right, the planets will begin orbiting the star or one another. But be careful, your entire solar system could be destroyed by comets or asteroids!

Try the Simulator Now at
Learn more about the new series “Known Universe” at
Check your local listings for air times.


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