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An orbit is a regular, repeating path that one object in space takes around another one.
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Gravity is the force by which a planet or other body draws objects toward its center.
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A satellite is anything that orbits a planet or a star.
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Learn all about comets!
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Pluto is now categorized as a dwarf planet.
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The biggest planet in our solar system
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Asteroid or Meteor: What's the Difference?
Learn more about asteroids, meteors, meteoroids, meteorites, and comets!
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Glossary for "Sign Here!" words
Defines words in "Sign Here" game.
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Find definitions of space and Earth science terms
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Launch a rocket from a spinning planet
Wind up that launch pad!
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How Long is a Year on Other Planets?
You probably know that a year is 365 days here on Earth. But did you know that on Mercury you’d have a birthday every 88 days? Read this article to find out how long it takes all the planets in our solar system to make a trip around the Sun.
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Make a Pinwheel Galaxy Pinwheel
A galaxy in the palm of your hand
orbits
