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Nov 13, 2015 12:40 PM ET // Irene Klotz
A pale blue dot may not be the only hint of life beyond the solar system. New research suggests astronomers pay attention to pale orange worlds as well, since they may resemble what Earth looked like earlier in its history.
Oct 19, 2015 08:30 PM ET // Irene Klotz
A series of laboratory tests show that some terrestrial bacteria would adapt well to the salty and sulfate-rich ocean believed to exist beneath the hard icy shell of Europa.
Oct 15, 2015 07:47 PM ET // Ian O'Neill
The fascinating speculation surrounding a recent Kepler observation of a star 1,500 light-years away has reignited questions of alien life in our universe and what it means for future studies.
Oct 14, 2015 09:00 AM ET // Larry O'Hanlon
It's a virtual certainty that comets have delivered the building blocks of life to Europa's hidden ocean, according to a new study.
Aug 27, 2015 12:48 PM ET // Ian O'Neill
As astronomical techniques become more advanced, a team of astrophysicists think they will be able to not only detect the signatures of alien life in exoplanetary atmospheres, but also track its relentless spread throughout the galaxy.
Aug 25, 2015 05:49 PM ET // Ian O'Neill
Cassini has once again turned to Enceladus, the enigmatic moon of Saturn.
Jun 4, 2015 03:00 PM ET // Elizabeth Howell,
Outer space might be the toughest environment for life, but some hardy microbes have been able to survive in it for surprising amounts of time.
Mar 2, 2015 03:53 PM ET // Ian O'Neill
Chemical engineers have created a theoretical model of a type of alien cell that might be able to support life on Titan.
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