‘The Universe’ examines how we know what we do about space; Mars, black holes and even if there is anywhere else out there that can sustain human life. This is the story of the scientists and explorers who dared to venture into uncharted territory.

In 2018, The New York Times ran a front-page story on a secret government programme that studied UFOs and the threat of alien invasion. Now, for the first time, this explosive special presents the report's classified contents.

Ancient Aliens examines 75 million years of the most credible alien evidence here on Earth, from the age of the dinosaurs, to ancient Egypt, to the skies over the western desert in the present day US.

Below each major city lies city upon city - each with its fascinating and unknown history. This series will reveal the technological marvels that allowed the construction of one city upon another - literally.