What If the Earth Collided With Another Planet?

What If the Earth Collided With Another Planet?


What a view… The air over here is especially… Wait, what is this doing here? This is WHAT IF, and here’s what would happen if another planet smashed into Earth. About 50 billion rogue planets are roaming the Milky Way
with no host star to hold on to. They don’t give off any light of their own and that makes them difficult to spot. Last time a stray planetoid the
size of Mars smashed into Earth, it scattered our planet’s
young crust into space, where gravity glued those particles
into what we now call the Moon. This time, it would be all
hellfire and brimstone with no survivors left. And here’s a timeline of how
things break down… An unknown object
would appear in the sky. It wouldn’t happen overnight, no. We’d know something was coming. We’d see the planet slowly growing bigger until one day it was as big as the Moon. It would seem as if everything was
unfolding in a relatively slow pace, but… that’s only because of the
huge distances involved. Out there in space, the rogue
planet would rush towards us at the speed of 11 km/s (7 mi/s). When the uninvited space intruder
came into the Moon’s orbit, bad things would start to happen. The gravitational pull of the alien
planet would make the tides on Earth eight times larger than they are now. Floods would begin to rampage
through the coastline cities. And still, the megatsunamis are yet to come. The gravity of both planets pulling
themselves towards each other would speed up the process. The incoming planet would hit
a speed of 60 km/s (37 mi/s). Megatsunamis would plot
their way across the oceans. With this would come lightning storms, plus hurricanes and tornadoes so large they wouldn’t have a number
on the category scale. If you didn’t book yourself a vacation aboard a spaceship that
would take you to outer space, your time on this planet would be running out. The rogue planet enters
the Earth’s atmosphere. Provided you hadn’t already
been killed by the lightning, hurricanes, flooding,
earthquakes or volcanoes, you’d see the rocky invader
completely filling the sky above you. The atmospheres of both planets would be compressed
together and glow brightly. It would get so hot that everything on the side
of the Earth about to get hit would instantly vaporize. For the rest of the Earth, the ground would become scorching magma. The collision would cause friction
between the two planets. Millions of tons of superheated rock would be sending a wall
of fire in all directions. While the hellfire would
rush across Earth’s surface, the planet’s inner core would be
melting it from the inside out. This would have one big outcome – the Earth would collapse in on itself. The end of the era. If you did manage to get
away in a spaceship, you’d see the massive
remnants of both planets catapulted into different orbits. Some of them would hit other planets. Others would be fired out of
the Solar System entirely. Whatever was left would form a new
asteroid belt encircling the Sun. None of this would give any hint that there was once
intelligent life on planet Earth. But hey, you can sleep well knowing
that this won’t ever happen… Most likely not. In any case, you’ve got time to watch a few more WHAT IFs.

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