In 1996, "Independence Day" hit cinemas. It showed never-before-seen images, packaged as light popcorn entertainment.

The makers of the blockbusting sci-fi thriller reveal how they made a hit, why Kevin Spacey was almost involved and what went wrong with the sequel ...

Take a drive to the CIA’s Area 51 – a route with more UFO sightings and unexplained mysteries than anywhere else on Earth ...

From unforgettable classics to modern sci-fi hits, these Hollywood alien films have captivated audiences for decades.