Rare type of space explosion could leave Earth uninhabitable for 'thousands of years'

Nov 1, 2023
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New research describes how a kilonova explosion triggered by colliding neutron stars could eradicate life on Earth for thousands of years. Thankfully, the odds are incredibly low.

Rare type of space explosion could leave Earth uninhabitable for 'thousands of years' : Read more
"Neutron star clashes that create bursts of light, called kilonovas, are considered the most violent and powerful events in the known universe."

This isn't accurate. Not by quite a bit. A typical supernova is about 10 times more powerful than a kilonova. A hypernova is another magnitude more powerful than that. A Tidal Disruption Event is more powerful. A merger of black holes and supermassive black holes emits more energy in gravitational waves than the power given off by a kilonova.
 
Jan 15, 2023
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New research describes how a kilonova explosion triggered by colliding neutron stars could eradicate life on Earth for thousands of years. Thankfully, the odds are incredibly low.

Rare type of space explosion could leave Earth uninhabitable for 'thousands of years' : Read more
The more realistic scenario is a piece of iron/nickel the size of Manhattan impacting earth. The one we did not notice.
That's all it takes, and it would be supremely ironic in terms of human destiny.
 
Nov 1, 2023
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The more realistic scenario is a piece of iron/nickel the size of Manhattan impacting earth. The one we did not notice.
That's all it takes, and it would be supremely ironic in terms of human destiny.
Yes! The Chelyabinsk meteorite was a stony chondrite, but if it were metallic (and impacted on the ground anywhere near where the chondrite exploded)it would have been lights out for the city.

They say a supernova could be an extinction-level event from out to around 75 light years. A hypernova from maybe 200 light years, and the scariest--a long-duration Gamma-Ray Burst from thousands of light years away (if a direct hit).

Neutron stars lurking in the dark and GRBs are the ones that would be hardest to predict until the moment their effects reach us.
 
Jan 15, 2023
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Yes! The Chelyabinsk meteorite was a stony chondrite, but if it were metallic (and impacted on the ground anywhere near where the chondrite exploded)it would have been lights out for the city.

They say a supernova could be an extinction-level event from out to around 75 light years. A hypernova from maybe 200 light years, and the scariest--a long-duration Gamma-Ray Burst from thousands of light years away (if a direct hit).

Neutron stars lurking in the dark and GRBs are the ones that would be hardest to predict until the moment their effects reach us.
There are just too many factors here. I think it will be sooner than later. We should expect it.