Most biologists agree that there have been five mass extinction events in history, the most common of which occurred 66 million years ago, when the dinosaurs were extinguished by an asteroid. However, the event was nowhere near as brutal as the Ordovician-Silurian extinction, in which more than 443 million years ago between 50 and 60 percent of marine life was wiped out. It is believed that this devastating incident happened after an extremely energetic explosion from a distant galaxy sent electromagnetic waves to Earth, following Neil deGrasse Tyson's StarTalk, in which he addressed mass mortality using the Ordovician event as a reference ,
He said, "When the worst comes and we slip and wipe ourselves out, life would almost certainly pass away.
"Because there were so many times before, we've already gone through five of the ones we know about.
"The Ordovician, she [scientists] is beginning to think that a gamma-ray explosion basically sterilized the earth, was so close to killing all life on earth, and still could not.
"A gamma-ray explosion struck the earth and life continued, it stopped after the asteroid had been wiped out and the dinosaurs out.
"Life is probably going to be ke I would bet almost everything, so there will be life after we leave. "
Dr. However, Tyson intervened, revealing that the story could be repeated.
He added, "So one thing about the gamma-ray burst that was only called after nobody had found another reason for how much life could happen at once.
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He continued, "If you're in a cave, you'll survive, but you'll probably eat things by those things hang out who have died.
You should go to places that would be protected, underground.
"It's not an immediate threat, so do not strap on.
"But if you destroy 90 percent of life and survive 1