ALEX COLLIER, EX-AIR FORCE PILOT, REVEALS A TERRIFYING ALIEN ENCOUNTER.

He was aboard their massive mothership, a colossal craft nearly 900 miles wide, where time flows differently. What felt like just three days aboard the ship translated to three months on Earth. The vessel was unlike anything imaginable—home to a 21-square-mile artificial park filled with lakes, trees, and even animals, all of which were sophisticated holograms.