Water discovered for first time in atmosphere of habitable exoplanet

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PARIS: Water has been discovered for the first time in the atmosphere of an exoplanet with Earth-like temperatures that could support life as we ...

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PARIS: Water has been discovered for the first time in the atmosphere of an exoplanet with Earth-like temperatures that could support life as we know it, scientists revealed on Wednesday .

Discovered in 2015, K2-18b is one of hundreds of so-called"super-Earths" - planets with less than ten times the mass of ours - spotted by NASA's Kepler spacecraft.'IS EARTH UNIQUE?' Working with spectroscopic data captured in 2016 and 2017 by the Hubble Space Telescope, Tsiaras and his team used open-source algorithms to analyse the starlight filtered through K2-18b's atmosphere.

By comparison, the percentage of water vapour in Earth's atmosphere varies between 0.2 percent above the poles, and up to four per cent in the tropics. K2-18b orbits a red dwarf star about 110 light years distant - a million billion kilometres - in the Leo constellation of the Milky Way, and is probably bombarded by more destructive radiation than Earth.

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