In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Sound doesn't travel in space.
255
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4
The population of the Earth has more than doubled since 1950.
151
It takes eight and a half minutes for light to get from the sun to earth.
159
Pluto is smaller than Russia.
9
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Summer on Uranus lasts for 21 years.
358