Believe it or not - UFO speculation ramps up

UFO believers are claiming new footage released onto YouTube shows an extra-terrestrial object either entering or leaving Earth.

According to the anonymous researcher
who uploaded the video

, the unusual cloud formation in Mexico could be caused by a UFO wormhole.

"AMAZING FOOTAGE shows what may have been a U.F.O. ENTERING or LEAVING our EARTH," the YouTube entry reads.

"Location as stated on the original posting is that of MEXICO. Stand by for further information."

But going by some comments posted on the You Tube page, some viewers remain to be convinced.

"I do believe the phenomenon you speak of is called a ... cloud."
- video encodings still in process -