A comet's tail always points away from the sun.
2
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
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Venus is the only planet that rotates clockwise.
310
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Sound doesn't travel in space.
255
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14