The heart of an astronaut actually gets smaller when in outer space.
216
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The population of the Earth has more than doubled since 1950.
151
Lightning strikes about 6,000 times per minute on this planet!
158
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
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