![](https://db637ll7r1kva.cloudfront.net/app/uploads/2024/06/04153023/GettyImages-184986309-370x208.jpg)
Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe – do aliens exist?
Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe – do aliens exist?
Episode 1
Scientists explore the possibilities of extra-terrestrial life in the 100 known galaxies of the visible universe - do aliens exist?
Episode 2
In part two, cutting-edge research leads an action-packed journey through space, to find out exactly whether aliens might come here, and how to prepare when they arrive.