Earth may not be the only place in the universe where life can exist. Scientists have discovered thousands of exoplanets, including worlds orbiting in the habitable zone where liquid water might be possible. Researchers are also developing new ways to search distant atmospheres for potential biosignatures — chemical clues that could hint at life. But there's a catch: a promising chemical signal doesn't automatically mean aliens are there. Non-biological processes can produce some of the same clues, and confirming life from light-years away is an extraordinary challenge. Perhaps alien life wouldn't look anything like the organisms we know. It might be microbial, hidden beneath ice, or based on chemistry we haven't encountered yet. **What's your take: will humanity discover convincing evidence of extraterrestrial life in our lifetime? Why or why not?**