Astronomical Facts You Ought to Know
1 The sun is 400 times larger than the moon but is 400 times further away from Earth, making them appear the same size.
2 If you ever stepped on the moon, your footprints would remain there forever.
3 Space is not a complete vacuum, there are about 3 atoms per cubic meter of space.
4 On Venus, a day is longer than a year.
5 When the Moon is directly above your head or if you stand at the equator, you weigh slightly less.
6 Dirty underwear and toilet paper have helped grown plants on the ISS American astronaut Don Pettit discovered that by folding a pair of underpants into a sphere shape and stitching in some Russian toilet paper (which is thick, wool-like gauze), this created a warmer environment for some tomato and basil seeds to start to sprout.
7 Every year, the Moon is moving away from Earth by 3.8 centimeters.
8 The hottest planet is not the closest planet to the Sun. Even though Mercury is the closest planet to the Sun, it is not actually the hottest. Mercury does not have any atmosphere meaning that this planet is only hot in the daytime when it is directly facing the Sun.
9 An asteroid about the size of a car enters Earth’s atmosphere roughly
once a year – but it burns up before it reaches us.
10 An asteroid about the size of a car enters Earth’s atmosphere roughly once a year – but it burns up before it reaches us.
11 All of the space is completely silent.
12 Lunar eclipses, however, can last 1 hour and 40 minutes.
13 90-99% of all normal matter in the universe is hydrogen.
14 Uranus is tilted on its side.
15 A full moon is nine times brighter than a half-moon.
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