Only 55% of Americans know that the sun is a star.
986
The earth travels through space at 660,000 miles per hour.
189
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131