A comet's tail always points away from the sun.
2
The earth travels through space at 660,000 miles per hour.
189
It takes eight and a half minutes for light to get from the sun to earth.
159
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
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The Earth gets 100 tons heavier every day due to falling space dust.
673