The earth travels through space at 660,000 miles per hour.
189
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Sound doesn't travel in space.
255
A comet's tail always points away from the sun.
2
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
Some asteroids have other asteroids orbiting them.
131
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13