There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Summer on Uranus lasts for 21 years.
358
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Only 55% of Americans know that the sun is a star.
986
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178