Sky History 2 HD Friday

Throughout the world there are mysterious ancient stones shaped into perfect spheres. The mystery of the stone spheres could provide clues about humankind's past

How many ancient architectural wonders bear similarities despite being built by different civilisations, questioning whether aliens could have designed them

The team follows the search for artefacts from the Second World War, joining marine archaeologists in the Solent as they raise a Fairey Barracuda divebomber

How the race to develop the first atomic bomb was seen as critical to secure world dominance

How the race to develop the first atomic bomb was seen as critical to secure world dominance

The events of 2017, when astronomers at the Pan-STARRS observatory saw an object they named Oumuamua, the very first observed visitor from interstellar space