This one is actually mighty creepy.
It's a hot day, you and your mate are walking on a road, having an ice cream. Suddenly everything around you turns so bright that you close your eyes because it hurts. Then BAM !!! You, me, everyone and everything else is reduced to ashes.
Wondering what could it be?
Thanos Snap? “I Am, Inevitable”
Could be. But it's not.
It's a force in space that could wipe us all out.
It’s called GRB (Gamma Ray Burst).
When a star goes Hypernova, the black hole left from it starts firing two lines of energy from its poles. To make matter worse, it spins.
If one of those poles is aimed right at us and hits the Earth, then we are toast. Literally.
Bye bye humans and all other living organisms!
A GRB can be powerful enough to vaporise the entire Earth in the blink of an eye.
And we would not get early warning signals as the GRB travels close to the speed of light.
Meaning one day we can all be walking down the street, the sky suddenly turns incredibly bright and BAM. We're all dead.
In the end, with a GRB, it all depends on the timing and the distance to the star that exploded.
At the moment there is no known star that is near that stage.
But the Earth would remain. Even if it's then a dead rock.
Another thing that could wipe us off is an asteroid named “Colossal God of Chaos” that is going to pass by earth at a distance of 30,577 km(19000 miles). Satellites orbit the earth at 36,000 km. This one is mighty close, a slight change in trajectory could wipe us out. We would all go down in flames.