In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
The Earth gets heavier each day by tons, as meteoric dust settles on it.
There are two golf balls sitting on the moon.
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.