Summer on Uranus lasts for 21 years.
358
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
It would take more than 150 years to drive a car to the sun.
569
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
NASA invented baby food as we know it today.
7
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Mars had an oxygen-rich atmosphere around 4 billion years ago
13