For the first time, astronomers have peered into the atmosphere of an exoplanet -- a planet outside our solar system -- and discovered both water vapor and temperatures that could potentially support life, according to a new study.
The exoplanet, known as K2-18b, is eight times the mass of Earth and known as a super-Earth, or exoplanets between the mass of Earth and Neptune. It orbits a red dwarf star 110 light-years away from Earth in the Leo constellation. The planet was first discovered in 2015 by NASA's Kepler spacecraft. Photos: Weird and wonderful planets beyond our solar systemThis artist's illustration showcases exoplanet K2-18b orbiting its host star.
Hide Caption 26 of 42 Photos: Weird and wonderful planets beyond our solar systemThis artist's impression shows the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to our solar system. Hide Caption 27 of 42 Photos: Weird and wonderful planets beyond our solar systemThis artist's impression shows a view of the surface of the planet Proxima b.
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