Illustration of a February calendar in a leap year. Credit: NASA/JPL-Caltech
What Is a Leap Year?
Image of the Earth with the Sun behind it. Credit: NASA/Terry Virts
How Long Is a Year on Other Planets?
Earth and the moon are glad they're buds. I'm so glad we're buds. Credit: NASA/JPL-Caltech
How Many Moons?
The Sun looks big from Earth, but it's actually an average sized star!
Game box art for the game Explore Mars. A Mars rover is in the middle of a Mars landscape. Credit: NASA/JPL-Caltech
Play Explore Mars!
Animation of states dropping onto the United States with text reading NASA in the 50 States. Credit: NASA/JPL-Caltech
Click here to explore how your state and NASA work together!
NASA in the 50 States
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