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 temperature of the earth's interior increases by 1 degree every 60 feet down.
115
A comet's tail always points away from the sun.
2
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
41% of the moon is not visible from earth at any time.
103
More than 20 million meteoroids enter Earth's atmosphere every day.
139
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175