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| 25 Amazing Facts About Space |
1. Saturn's moon Titan has plenty of evidence of organic (life) chemicals in its atmosphere.
2. Life is known to exist only on Earth, but in 1986 NASA found what they thought might be fossils of microscopic living things in a rock from Mars.
3. Most scientists say life's basic chemicals formed on the Earth. The astronomer Fred Hoyle said they came from space.
