K2-18b: Scientists say discovery of water vapour on enormous Earth-like planet means it could support life
"What makes that really exciting is that the planet is in the so-called habitable zone.
Prof Tinetti said K2-18b, which was discovered in the Leo constellation in 2015, would likely be the first of many potentially habitable planets to be found. "But it doesn't mean that it is good for us as human beings. On Earth, there are many microbes and bacteria that are perfectly happy living in conditions that are very cold, very hot, very acidic and so on.Dr Angelos Tsiaras, of the UCL Centre For Space Exochemistry Data, added:"K2-18b is not 'Earth 2.0' as it is significantly heavier and has a different atmospheric composition.
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