Frequent meteor collisions occurred on the Red Planet for 30 million more years than thought, a new study suggests.
A new study suggests that a period of heavy cratering on the Red Planet persisted 30 million years longer than thought. Studies of the, as this period is called, also has implications for the rise of life on Earth.
The new study is largely based upon a meteorite known as Northwest Africa 7034, nicknamed"Black Beauty." The meteorite includes part of the ancient crust of Mars during the period considered for study, which is nearly 4.5 billion years ago.A fresh look at the meteorite found signs of"shocking", or very high-intensity damage during a meteorite impact. A proxy of such shocking is an element called zircon, which only occurs during the largest and most powerful meteorite impacts.
"The type of shock damage in the Martian zircon ... has been reported from all of the biggest impact sites on Earth, including the one in Mexico that killed off the dinosaurs, as well as the moon, but not previously from Mars," study lead author Morgan Cox, a Ph.D. candidate at Curtin University in Australia,Black Beauty is about 4.45 billion years old, which has larger implications for the rise of life on Mars.
The amount of water available on the surface or underground today is highly debated; a study released just weeks ago, for example, suggests that a purported
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