In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Earth is the only planet in our solar system that's not named after a god or goddess.
17
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The earth travels through space at 660,000 miles per hour.
189
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Summer on Uranus lasts for 21 years.
358