"Either our models are in error, or the DMS/DMDS might not exist," Schwieterman told Space.com. "Finding life outside the ...

K2-18b, an exoplanet 120 light-years away, may be the best hope to confirm that life exists beyond Earth. Here's what to know ...

"We conclude that Titan's uniquely rich organic inventory may not in fact be available to play the role in the moon's ...

Such missions are dress-rehearsals for future space exploration to the ice-covered moons of Jupiter and Saturn, where alien life could be thriving.