Sky History 2 Saturday

Serpent gods are found in many religious texts, but could these stories be describing reptile-like extraterrestrials, and are they still here today?

An assessment of whether past plagues have been brought to Earth by aliens and whether the planet is prepared for an extraterrestrial invasion of disease

The fanatical women who took Hitler under their wing and trained him in the methods of high society to launch him to power, only to be left behind once he achieved it

Strange descending lights spotted in 1980 at the now former RAF station at Woodbridge, Suffolk, by servicemen Jim Penniston, John Burroughs and Ed Casabang

In a Danish bog, hundreds of mutilated ancient bones are found, while a mysterious deserted island belonging to Russia is explored

A look at suggestions that extraterrestrials could be altering human DNA and repopulating the Earth with alien-human hybrids