10 Facts About Space That Will Rock Your World

10. Jupiter's Red Spot is shrinking

9. One day on Venus is longer than one year on Earth

8. The largest asteroid in our solar system is a mammoth piece of space rock named Ceres

7. If two pieces of the same type of metal touch in space, they will bond and be permanently stuck together

6. More energy from the sun hits Earth every hour than the planet uses in a year

5. 99 percent of our solar system's mass is the sun

4. The Apollo astronauts' footprints on the moon will probably stay there for at least 100 million years

3. There is an uncountable number of stars in the known universe

2. Space is completely silent

1. Neutron stars can spin at a rate of 600 rotations per second