There are two golf balls sitting on the moon.
721
The earth rotates more slowly on its axis in March than in September.
145
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
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
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
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