What If a Gamma-Ray Burst Hits the Earth?
What if we told you that supernovas aren’t the brightest events in the Universe? Gamma-ray bursts are. They shine hundreds of times brighter and only last for several minutes at most. But even a second would be enough for them to mess up all complex life on the planet.
Watch more what-if scenarios:
Planet Earth: https://www.youtube.com/watch?v=_-HhCwYD7rc&list=PLZdXRHYAVxTJCzxwmCq0NNpYq9N9wyb2l
The Cosmos: https://www.youtube.com/watch?v=gfuJyVkMH_g&list=PLZdXRHYAVxTJno6oFF9nLGuwXNGYHmE8U
Technology: https://www.youtube.com/watch?v=CS3bBO05fpU&list=PLZdXRHYAVxTIeRY3JtgXgoGqSEB7kDdKO
Your Body: https://www.youtube.com/watch?v=QmXR46TrbA8&list=PLZdXRHYAVxTJNsV9FFeNAKl2ySsHj8GZO
Humanity: https://www.youtube.com/watch?v=fdCDQIyXGnw&list=PLZdXRHYAVxTIFnvmOeWbv-Mt8zFxSCSvZ
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“Imagination will often carry us to worlds that never were. But without it, we go nowhere.” — Carl Sagan
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Produced by Underknown in Toronto, What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.
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@JamelRoseJr.
February 21, 2026 at 5:29 am
We just got bad luck if the gamma ray burst chooses to hit us out of all the other planets in the galaxy
@AlbertAndo-q3l
February 21, 2026 at 5:29 am
EARTH IS 500 MULTILLION TIMES STRONGER THAN BEFORE
@cookdadcook4121
February 21, 2026 at 5:29 am
W
@mariea82
February 21, 2026 at 5:29 am
This is even more frightening than Putin
@ridwanshaleh1332
February 21, 2026 at 5:29 am
The Heliosphere couldn't block it?
@kvd1
February 21, 2026 at 5:29 am
How ever the good news is that the accuracy of a GRB hitting the solar system is very low.
And stars are constantly moving throughout our galaxy and eventually the poles of WR 104 will likely miss us.
But if it does hit our solar system, we have 8 thousand years before the GRB hits our solar system.
Even though we expected GRBs to hit our solar system.
@MelowFemme
February 21, 2026 at 5:29 am
The chances of getting hit by a gamma ray burst are low but never zero
@FrogInShorts
February 21, 2026 at 5:29 am
I hate the constant laserbeam edit like a grb would be this super focused narrow beam that travels millions of lightyears without fanning out.
@georgew.5639
February 21, 2026 at 5:29 am
Guess what! A supernova explosion of Betelgeuse is quite likely to result in a gamma ray burst as portrayed in this video. And the odds are good that the earth will be hit by it. Just saying.
@Fluriana
February 21, 2026 at 5:29 am
I want something like this to happen.
@submechanophobia768
February 21, 2026 at 5:29 am
I think its over rated. Its not like the radiation is like a laser. It with diverge enormously from those distances that there will be so dispersed that it will yield little power over the surface area of the earth.
@Saifullah-madni
February 21, 2026 at 5:29 am
Where is earth magnetic shield…
@yonu5983
February 21, 2026 at 5:29 am
3:59 Yeah right.
@RyanRahJah
February 21, 2026 at 5:29 am
nothing is gonna happen because well the 'Ozone' layer will stop it.
@SilverlinePhoenix86
February 21, 2026 at 5:29 am
Do gamma ray bursts also occur from starquakes? I do remember a video about a magnetar releasing a gamma ray bursts from a starquake for outside our galaxy
@IdaArtia
February 21, 2026 at 5:29 am
What if we just created a giant shield to protect the Earth from such an attack?
@benquinneyiii7941
February 21, 2026 at 5:29 am
Positive thinking
@stinkydunked
February 21, 2026 at 5:29 am
"GRBs are brighter than supernovas"
1 minute later:
"Supernovas cause GRBs"
@zorouhrblx
February 21, 2026 at 5:29 am
We got hit by one a few days ago, we chillen Lowkey
@Maya_Moltisanti31
February 21, 2026 at 5:29 am
Man i love gamma ray bursts
@Zotesoap
February 21, 2026 at 5:29 am
"Our sattelites would detect the light speed phenomenon and give us advance warning"
Im not sure about this line of thought
@jameslowry1
February 21, 2026 at 5:29 am
It amazes me the way most people especially those who make videos like this still believe the universe is billions of years old because any event or events that happened in the non repeatable past are only as good as the records we have of them and we can never be 100% sure they are accurate so whether the universe is old or young it has to be taken on faith and anything that has to be taken on faith is not science even if you believe it is
@vo1dm
February 21, 2026 at 5:29 am
Just throw a coin for +CHARGEBACK
@rlmpproductions
February 21, 2026 at 5:29 am
hy·po·thet·i·cal ˌhī-pə-ˈthe-ti-kəl
Synonyms of hypothetical
: involving or being based on a suggested idea or theory : being or involving a hypothesis
@Shalltearbuttfallen
February 21, 2026 at 5:29 am
Goku’s kamehameha is technically a mini gamma ray burst.
@joeyjoestar720
February 21, 2026 at 5:29 am
Betelgeuse is 642.5 light years away 😢😢
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