The Earth is at least 4.54 billion years old, and in that time span has undergone profound change. But what do we really know about our own planet? Click through and find out more about our unique ...

Earth is our planet and we made it what it ... Check out the rest of the interesting facts.

The distance from Earth to Pluto is 4.67 billion miles. The average passenger aircraft travels at 575 miles per hour. That means it would take more than 8 million hours to reach the planet ...

Earth rotates on its axis every 23.9 hours, defining day and night for surface dwellers. This axis of rotation is tilted 23.4 degrees away from the plane of Earth's orbit around the sun ...

In fact, if you pulled all the asteroids in that belt together, they'd only weigh about 4% of the mass of Earth's moon. That's why NASA gets really excited when it catches even one asteroid ...