An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
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
A comet's tail always points away from the sun.
2
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118