The light hitting the earth right now is 30 thousand years old.
163
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
It takes eight and a half minutes for light to get from the sun to earth.
159
The population of the Earth has more than doubled since 1950.
151
Astronauts cannot burp in space.
232
Venus is the only planet that rotates clockwise.
310
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
