What’s the best evidence we’ve found for alien life?

We’ve all wondered whether we’re alone in the universe, and with potentially habitable planets, strange space signals and UFO hearings hitting the headlines, it’s starting to feel like we’re on the cusp of a major extraterrestrial discovery. But what’s the best scientific evidence we’ve found for the existence of alien life?

The sobering reality is that there isn’t any yet. There’s no scientific evidence for aliens in the declassified UFO videos, in mutilated cows whose injuries are blamed on extraterrestrial activities or in purported alien bodies. Nor is there any such evidence in the formal academic research. Live Science checked in with experts to make sure.