The space agency's James Webb Space Telescope discovered a molecule called dimethyl sulphide, or DMS, on the distant planet, which on Earth can only be produced by life, according to a report from the BBC.
"On Earth, DMS is only produced by life. The bulk of it in Earth's atmosphere is emitted from phytoplankton in marine environments," University of Cambridge Profesor Nikku Madhusudhan, who led the research, told the BBC. More @ https://www.foxnews.com/us/nasa-detects-molecule-another-planet-only-produced-by-life
According to Spongebob Squarepants science, 120 years is more than enough for phytoplankton to evolve into an advanced technological society, develop space travel, find our planet, and send an invasion force of highly advanced, yet terribly flawed warriors with weaknesses to face punches, over the shoulder flips, and sarcastic commentary.
Or wait, was that Battleship....Independence Day? Oh, it was The Watch... no, that was the crotch aliens.....