The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Sound doesn't travel in space.
255
It 'snows' metal on Venus.
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The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
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