A user has found a 'huge asteroid' while scanning the virtual heavens using Googly Sky.
Youtube user planetkrejci, who has investigated other anomalies on NASA pictures, claims the object - found using the Google website which transports the heavens to desktop computers and smartphones - is an asteroid which is heading towards Earth.
He says the asteroid - which, if real, has not been spotted by other scientists or astronomers - has only appeared recently on Google Sky, which receives updated images every few months.
Announcing his find on YouTube, he says the black object, mottled with green spots, is so clear that it must be within the solar system.
The user had been exploring the region a few months earlier, and had 'bookmarked' a spot just to the left of the asteroid - so he is certain the object was not there previously.
There are other explanations - this could be a simple technical glitch, either on Google Sky's end or within the original photograph.
The earthbound Google Maps regularly has glitches where pictures have been incorrectly sewn together.