Another Doomsday Event Looming?
Earth may be in great danger as the sun’s path through the galaxy sends comet flying towards our planet, scientists have warned.
Researchers have identified a 26 million-year cycle of meteor impacts that coincides with the timing of mass extinctions over the past 260 million years.
The doomsday events are linked to the motion of the sun and its family of planets through the dense mid-plane of the Milky Way.
Researchers have identified a 26 million-year cycle of meteor impacts that coincides with the timing of mass extinctions over the past 260 million years. Pictured is a graph showing how the rate of cratering has changed on Earth over time. The arrows indicate the dates of mass extinctions
Gravitational disturbance of the Oort Cloud – a shell of icy objects on the outer edge of the solar system – is believed to lead to periodic showers of comets pouring through the inner region where the Earth resides.
The last of these events is said to have occurred about 11 million years ago, roughly the same time as the Middle Miocene mass extinction.
But according to geologist Professor Michael Rampino, it might be wrong to assume that we are living in a completely safe era, millions of years away from the next danger period.
‘There is evidence that the comet activity has been high for the last one to two million years, and some comet orbits are perturbed, so we may be in a shower at the present time,’ he said.
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