Atmosphere discovery makes Trappist-1 exoplanet priority in hunt for alien life

An atmosphere that could have enveloped it for billions of years and possible liquid water make planet most likely home for life, say scientists An Earth-sized world that swings around a star in the constellation of Aquarius has become a priority in the search for extraterrestrial life after scientists found that an atmosphere could have enveloped the planet for billions of years.The planet is one of seven circling a small and feeble star called Trappist-1 which astronomers reported in a wave of