cookies to track usage and preferences."
data-cookieaccepttext="I UNDERSTAND"
data-cookiedeclinetext="Disable Cookies"
data-cookiepolicytext="Privacy Policy">
Astronomers have long debated what kind of chemistry might serve as a bona fide alien biosignature. With the launch of the James Webb Space Telescope, those ideas may be put to the test.
Close X
Science literacy is more important than ever. Help us combat misinformation.
Knowable Magazine’s award-winning science journalism is freely available for anyone, anywhere in the world. Our work provides a vital service in increasing the public’s understanding of science. But to keep everything free to read, we need your help. Donate today and help us inspire and inform readers everywhere.
