Munich Technical University researchers found out that a supernova star exploded not far from Earth 2.5 million years ago. But it is still unclear which one.
It is very surprising that the Earth survived the explosion of a star, because the substances emitted by them usually tear down everything in its path.
Recently, scientists have paid attention to the behavior of Betelgeuse – one of the closest red giants to us. It was expected to soon transform into a supernova and explode, destroying the Earth. But everything turned out to be fine.
So the researchers decided to analyze the content of isotopes and manganese in the Earth’s crust and realized that about 2, 5 million years ago, the Earth was attacked by a large number of substances formed by a supernova.
Earlier, scientists said that the isotopes manganese 53 and iron-60 are formed only after a supernova explosion. And now the researchers have seen these substances on Earth, which indicates that two and a half million years ago, very close to Earth exploded a star.
Usually, manganese 53 can be found in space dust. It falls to the Earth continuously, but iron-60 is very difficult to find in our country.