Alien invasions are terrifying to think about, but cool to watch on TV. These are the 10 best shows you can watch about that unlikely occurrence, ranked.

The cult classic programme aired for just 14 episodes, but has built up a dedicated audience over the years.

A long-dormant sci-fi franchise may be preparing for a return more than two decades after its original run ended. A new animated project connected to the series is currently in advanced development.