This might be a disappointing read for all of the alien enthusiasts out there.
But Nasa has confirmed that 'surprising activity' discovered on Jupiter's moon Europa is not the result of alien life.
The search for alien life has dominated much of recent space travel, and as far as Europa goes, it's practically on the front doorstep, compared to the universe.
So when Nasa found "surprising evidence of activity that may be related to the presence of a subsurface ocean on Europa" as a result of their research, they probably were aware they couldn't just announce the activity without that little disclaimer.
Details of exactly what their findings are will be revealed in a press conference later.