It's imperative that we find a way to destroy this alien threat immediately. Let's launch 10,000 nuclear warheads at the planet to make sure, if there is life there it can't come and anal probe us.
- Sorry, had my Donald Trump hat on for a minute there.
Certainly be interesting, although "means life on earth" doesn't necessarily mean "means life elsewhere", but certainly worth looking to see if we can investigate. It could launch a lot of interest in science and scientific studies (that help us with more terrestrial problems) if we detect life and there is a big push to find out more.