Sky History 2 Monday

Specialists in the field of the extraterrestrial study evidence across 75 million years to validate the theory that there has been extraterrestrial intervention on Earth

The bombing of Greenpeace ship the Rainbow Warrior in July 1985, which resulted in the death of photographer Fernando Pereira

Dan Jones explores Arundel Castle, in West Sussex, which has been the seat of the Dukes of Norfolk and their ancestors for over 850 years

A case in which a security officer was knocked unconscious by an unearthly presence at a nuclear launch site in South Dakota. On awakening, he had travelled miles from the site

How an encrypted German telegram offered the key to saving Britain in its darkest hour. A team of geniuses set about decoding the message to help win the Great War

A look at a theory that suggests aliens may have colonised an ice-free Antarctica, before a global event plunged it into the Ice Age