Water has been found on a 'potentially habitable' world 110 light years away
, is the first successful atmospheric detection for an exoplanet orbiting in its star’s ‘habitable zone,’ at a distance where water can exist in liquid form.About eight times the mass of Earth, K2-18b orbits the cool dwarf star K2-18, which is 110 light years from Earth in the constellation of Leo. It’s now the only planet orbiting a star outside the solar system–an ‘exoplanet’–that’s known to have both water and temperatures that could support life.
No–K2-18b is way bigger and very different to Earth. “Finding water in a potentially habitable world other than Earth is incredibly exciting,” says Dr. Angelos Tsiaras at the UCL Centre for Space Exochemistry Data ), and first author of the paper ‘“K2-18b is not ‘Earth 2.0’ as it is significantly heavier and has a different atmospheric composition.
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