While there is currently no direct evidence of extraterrestrial life, the vastness of the universe and the discovery of exoplanets in the habitable zone of their stars suggest that it is possible. Scientists are actively searching for signs of life beyond Earth using methods such as studying planetary atmospheres, searching for biosignatures, and exploring extreme environments on Earth that mimic conditions on other planets. Discovering extraterrestrial life would have profound implications for our understanding of biology, the universe, and our place in it.