An asteroid four times the size of the Empire State Building is set to make a 'close approach' to Earth in just three days.
According to Nasa, the asteroid, named 7335 (1989 JA), will become within 2.5 million miles of the Earth on May 27.
Remarkably, that's only ten times the distance between the Earth and the moon - especially given the enormous size of the asteroid.
The 7355 asteroid is as tall as 1,000 people stacked on top of each other and four times the size of the Empire State Building.
The colossal rock is also a staggering 1. 1 miles wide (1.8 km), Nasa's Close Approaches Debate has revealed.
However, the asteroid poses no immediate threat to Earth.
It is expected to fly at 3.26pm UK time in just three days time, according to Nasa.
The giant rock is just one of a number of objects that Nasa expect to make "close approaches" this week.
Nasa tracks potential objects which could pose danger to our planet - luckily nothing currently being tracked by the space agency poses any threat.
They are currently tracking 2,000 asteroids comets and other objects whilst also tracking and identifying any potential new asteroids
And not since 66 million years ago has Earth seen an asteroid - with the last one obliterating dinosaurs.
The most likely objects the Earth could see are much smaller but are still capable of wiping out a city.
However, this would not destroy the planet as "Global catastrophes" happen when objects larger than 900 metres across crash into Earth.
Fortunately, Nasa believe there is no large object set to hit the Earth in the next several hundred years.
The possibility of a giant collision is thought to be very unlikely.
Nasa said: "Nasa knows of no asteroid or comet currently on a collision course with Earth, so the probability of a major collision is quite small.
"In fact, as best as we can tell, no large object is likely to strike the Earth any time in the next several hundred years."
