Horizon: Strange Signals from Outer Space!

BBC TWO, 9.00PM

Ah, the search for alien life – one of popular science’s most frequently addressed issues. Seeing as there are 100million trillion planets dotted around the universe, surely it’s not possible that we’re completely alone. In this engrossing Horizon, we hear from scientists and researchers, including those at the Green Bank Telescope searching for radio signals from “Tabby’s Star”, which some believe might be surrounded by a Dyson Sphere – a vast energy collector built by advanced aliens.