Name: 如果伽馬射線爆發擊中地球怎麼辦？ (What If a Gamma-Ray Burst Hits the Earth?)
Uploaded: 2021-01-14T10:40:22.000Z
Duration: 4 min 18 s
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第二類條件句型

aren't the brightest events in the Universe?

and only last for several minutes at most.

They occur when two neutron stars collide and form a black hole.

Or when a black hole swallows a neutron star.

They're outside the spectrum of visible light.

That's why you can't see them with your naked eye.

triggered a mass extinction here on Earth.

But that mighty event was 450 million years ago,

we might have a chance to make it out alive.

the only things that would be in danger down here

Some of them would get knocked offline permanently.

You might lose your internet connection, but...

most of the malfunctioning satellites were restored.

The radiation that would rain down on Earth

Almost all of our plant species would die.

There wouldn't be enough of them left to sustain photosynthesis

and with that, the amount of oxygen in our atmosphere.

and the rest of them would be left to suffocate.

Humans could try to save ourselves with oxygen masks, but...

even that wouldn't help us last too long.

The damage from it would be equivalent to the Earth

First, it would immediately destroy our atmosphere.

and trying to figure out how to restore the planet's atmosphere

before this hostile environment killed us completely.

Gamma rays have such a short wavelength that,

with a bit of luck, the beam could pass relatively close

our satellites would detect the GRB immediately.

But what could we do once we found ourselves in the crosshairs

photons would be pulling the ozone layer away

You'd see a cloud of photochemical smog covering the planet.

We'd be blasted with all sorts of cosmic rays.

You'd witness another wave of mass extinction on Earth.

is likely happen for another billion years.

how to move the Earth out of the danger zone.

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如果伽馬射線爆發擊中地球怎麼辦？ (What If a Gamma-Ray Burst Hits the Earth?)

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