The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13