When a strange alien object is discovered speeding through our solar system, experts race to uncover if it’s real evidence

An enormous concrete box with bizarre circular openings looms on the coast of an island near mainland China; experts investigate

Galaxies are locked in continual combat across the universe, and our own Milky Way will face its biggest opponent ever

A breathtaking stainless steel tower seems otherworldly and out of place in the remote mountain forests of Croatia; experts investigate