The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
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
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46