00:0010 space facts that will blow your mind. Facts number one. Earth used to have two moons. Long
00:05ago, Earth may have had a second, smaller moon. Scientists believe it crashed into the bigger
00:11one forming the moon we see today. Facts number two. Some planets have stronger magnets than
00:16Earth. Jupiter has a magnetic field 20,000 times stronger than Earth's. It could mess up your
00:21compass if you were nearby. Facts number three. The dark side of the moon isn't really dark. It
00:26gets just as much sunlight as the front side. It's just always facing away from Earth. Facts
00:31number four. The biggest volcano in the solar system is on Mars. It's called Olympus Mons.
00:36It's three times taller than Mount Everest. Facts number five. There are space junk pieces flying
00:41around Earth. Old satellites and rocket parts are floating in orbit. Scientists track thousands
00:47of them to avoid crashes. Facts number six. Stars can explode like bombs. When a big star dies,
00:53it explodes in a blast called a supernova. It's brighter than whole galaxies for a short
00:57time. Facts number seven. There are huge storms on other planets. Jupiter's great red spot is a
01:03storm bigger than Earth and it's been going for 300 plus years. Facts number eight. Uranus spins
01:08sideways. Unlike other planets, Uranus rolls like a ball around the sun. Scientists think something big
01:15knocked it over long ago. Facts number nine. Astronauts lose bone and muscle in space. In zero gravity,
01:21bones and muscles weaken. That's why astronauts exercise for hours every day. Facts number 10.
01:27Time goes faster in space. Because of something called Einstein's theory of relativity, clocks tick
01:33faster for astronauts than on Earth. A little bit, but it's real-time difference.
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