New research reveals Earth-like biospheres on other planets may be much rarer than previously thought.

There Is Only One Other Planet In Our Galaxy That Could Be Earth-Like, Say Scientists

Scientists have identified 2,034 nearby star-systems in the Earth Transit Zone, a sliver of the sky where it would be possible to identify the Earth by observing it cross in front of our sun.

Exoplanets in 2,034 star-systems get cosmic front-row seat to see Earth