The YouTube video displaying an alien's shadow has gone viral on internet. This video from user Wowforreel has been seen more than 2 million times in less than a month. Lunar images from NASA and Google Earth shows a humanoid figure walking along the surface of the moon. This proves that there is an alien on the Moon.

According to Australia's 9News, Wowforreel started investigating the shadow after an online tip from another web user.

Wowforeel says that an irregular shaped dark spot was noticed by him on Google Moon. It looked like it was casting a shadow from a massive standing object. This photographic evidence with no doubts triggered the thought that maybe we aren't alone in the Universe.

He says, "At first I thought perhaps it was something drawn into the picture but after going to Goggle Moon, whatever it is or isn't it is there. You can get the idea. Go check it out and of course decide for yourself. Debunk it, share it, and figure it out".

So far there's no word from NASA as to exactly what they believe from the image. It has to confirm what this image is all about. However, there has been plenty of speculation from many corners of the web.

The YouTube users were baffled by the unusual shape and have started to bombard the comments under the video link. One wrote, "Looks like a vulture?" Another user said:"Okay, you found me!"