In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The heart of an astronaut actually gets smaller when in outer space.
216
Astronauts cannot burp in space.
232
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Pluto is smaller than Russia.
9
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Sound doesn't travel in space.
255
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18