2.6 million years ago, a supernova showed that a new investigation denied the climate change and eliminated the abuses of large oceanic animals including Megalodon.
In a conversation on Xinhua Sunday, Adrian Melott, a physicist and astronomer emeritus at the University of Kansas, said that some or a few supernovae events took place, with about 150 lightweight Earth.
Supernova is an explosion of a star that has reached its end. It will summarize the whole of the galaxy and make it more radiant in the energy of the sun. It is also the main source of heavy elements in the universe.
According to NASA, the supernova is the biggest explosion ever seen by humans.
Melott, the chief author of paper released in astrobiology, said that three deposits of seabed, including 60 iron isotopes of iron, were "slam-dunk" to prove the time and distance of "super-baked".
It was not for iron-60 to fall to the ground but from the supernova, he said.
Melott's team has been researching for 15 years.
Supernoba energy spreads iron-60 layers around the world, including particles that penetrate particles, which cause glowing earth, cancer and mutations, especially larger animals.
"The cancer rate would be around 50% to calculate a human size, the higher the worse, the elephant or the whales, the radiation dosage goes on," he said.
A supernova of more than 2.6 million years ago linked to the destruction of the megafauna on the Pleistocene Pliocene border, 36 percent of the genus disappeared, according to research.
"The high energy muons are the most important agents that increase depth in the oceans," said the paper.
"One of the disappearances that lasted 2.6 million years ago was Megalodon," said Melott. "We can speculate that you can do something with Muon. In essence, it is a bigger creature, the radiation would be higher."