1. Alien Energy

From military radar to Navy aircraft, sightings of Unidentified Aerial Phenomena have become more frequent of late and been measured on ever more sophisticated technology. It has lead to unprecedented acceptance of alien contact across the globe, including by the US government. What could these visitors be after? Is it the potential energy stored in the Earth's oceans?

3. The Black Knight

In 1998 Astronauts captured images of a satellite in Earth's orbit. Is it the same alien object that Nicola Tesla detected in 1899, an alien probe known as the Black Knight? And in 2017 scientists discovered another mysterious satellite from outside our solar system. What could explain Oumuamua's artificial trajectory?

4. The Doorway

Mars is the key focus of humanity's expansion into space right now. Millions of years ago the Red Planet had a lot in common with Earth, but it's now a desert wasteland. Do the doorways recently discovered on the planet's surface lead to an existential lesson for our species?