A comet's tail always points away from the sun.
2
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The earth travels through space at 660,000 miles per hour.
189
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
It would take more than 150 years to drive a car to the sun.
569
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16