Sound doesn't travel in space.
255
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
A comet's tail always points away from the sun.
2
Jupiter is bigger than all the other planets combined.
254
41% of the moon is not visible from earth at any time.
103
The earth travels through space at 660,000 miles per hour.
189
More than 20 million meteoroids enter Earth's atmosphere every day.
139