When Was First Life Born?

Our universe is a mind-bogglingly vast place, and pinpointing the exact moment when first life was born is a real cosmic mystery. Scientists believe that life on Earth emerged around 3.5 to 4 billion years ago, but in the grand scheme of the universe's 13.8-billion-year history, that's relatively recent. It's possible that life could have sprung up elsewhere in the universe even earlier, given the countless planets and potentially habitable environments out there. Until we explore more of space and make new discoveries, the when and where of life's origins beyond Earth remain tantalizing questions that continue to pique our curiosity. Learn more about your ad choices. Visit megaphone.fm/adchoices