The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
A comet's tail always points away from the sun.
2
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15