NASA said the giant asteroid – dubbed 2018 LF16 – is a whopping 700ft, making it twice the size of the Big Ben in London.
The rock has a staggering 62 different potential impact trajectories with our planet – each of them waiting to sling the asteroid toward Earth over the next 100 years.
The first of these unnerving opportunities will arise just five years from now – occurring on August 8, 2023.
Other potential impact dates in the near future fall on August 3, 2024, and on August 1, 2025.
The asteroid was last seen by astronomers on June 16.
It is currently hurtling through space at a speed of more than 33,844 miles per hour.
But there is no guarantee the asteroid will slam into Earth.
This translates into a 99.9999967% chance of a miss in the event that asteroid 2018 LF16 does come wandering too close to home.
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This particular space rock ranks as a level “zero” threat on the Torino Impact Hazard Scale – meaning that its likelihood of a collision with Earth is nonexistent or close to non-existent.
Despite that, the US space agency will continue to keep an eye on this formidable space rock.
Our solar system is packed full of gigantic space rocks, some of which are more than 1 kilometre in size.
We are tracking the movements of about 90% of these, which would wipe out humanity if they ploughed into Earth.
That means there are a vast number of rogue rocks which could be on a collision course with our planet.
Astronomer Patrick Michel previously said: “If these bodies impact Earth, they can cause regional damage across a whole country or even a continent.”
The last known asteroid impact levelled vast swathes of the Siberian Tunguska forest in 1908.
A much small asteroid struck over Chelyabinsk Oblast in Russia in 2013, injuring 1,000 people with shattered glass caused by the asteroid exploding in the sky.
Thankfully, Asteroid WB105 will not come close enough to strike the Earth but its trajectory is near enough for NASA to pay attention.
Asteroid WB105 is a so-called Near Earth Object (NEO) on an Earth Close Approach.
NEOs are all asteroids and comets which approach our home world with 30 million miles (50 million km) of its orbit.
There are several proposed ways to tackle asteroids.
The first would involve a “gravity tractor”, which is essentially a space ship designed to tug the rock onto a new path using its own gravitational pull.
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Others would involve blasting the space rock with some sort of projectile to try and steer it onto a new course, or even blowing it up with a nuke.
However, this could backfire on humanity because it would cause radioactive rock fragments to rain down on the planet.