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EntertainmentAncient 'tree' on Mars
UFO hunters claim to find the fossil record of a tree trunk on Mars, indicating that the red planet once covered greenery.The NASA autonomous probe is about to land on Mars
The program will be carried out from the Mission Control Center of NASA's Jet Laboratory in California, but will be interrupted because radio signals on Mars take 14 minutes to
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Why are diesel engines not used in small cars?
Why does every lock have a 'mysterious' small hole at the bottom?
Why is Mount Everest so attractive to so many people?
Why will the Earth never be 'swallowed' if one day the Sun turns into a black hole?
Record selling price for the gold watch of the richest passenger on the Titanic
Humans' heat tolerance limit is not as high as we think
Atomic clocks are off by only 300 trillionths of a second every day
China wants to bring Mars samples before the US
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