The Earth is really, really old. Over 4 1/2 billion years old, in fact. How do we begin to comprehend a number that large? It helps to put it on a more fathomable scale. Watch to see where Earth's ...
On the left side of the animation, numbers indicate the speeds of Earth's rotation, its orbit around the sun, the solar system's orbit around the Milky Way's center, and the galaxy hurtling ...
Hubble Space Telescope images of Jupiter have been "photo-mapped onto a sphere," and animated into a full rotation, according ...
A new animation ... The Earth spins faster than the moon orbits it, so as the bulge rotates away, it pulls the moon along with it. The moon pulls back, and that slows the Earth's rotation.