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
Venus is the only planet that rotates clockwise.
310
More than 20 million meteoroids enter Earth's atmosphere every day.
139
It would take more than 150 years to drive a car to the sun.
569
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15