We are Aliens (film)
Fulldome film｜24min｜Key Stage 2+
Up-to-date film about the current search for alien life. Considers why we are searching, places we might find life (including Mars, showing a robot similar to the Curiosity rover), how to find planets around other stars, and what the future might hold.
Clips from the show and extended interviews with the scientists can be found at the show's website www.wearealiens.com, which also has related biology, chemistry and physics classroom activities aimed at KS3-4.
KS1 children would be very unlikely to follow the science but the visuals are lovely, so this is a good option for mixed-aged groups. The (few) aliens shown are non-threatening and the visuals varied and non-abstract.