The American space agency, Nasa, has successfully flown a small helicopter on Mars.
The drone, called Ingenuity, was airborne for less than a minute, but Nasa is celebrating what represents the first powered, controlled flight by an aircraft on another world.
This was the moment the data came through that proved its flight was a success.
Read more: Nasa successfully flies small helicopter on Mars
This post was originally posted on BBC News. Read the rest of the story at https://www.bbc.co.uk/news/science-environment-56802505.