MailOnline
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Cardiff University's Professor Jane Greaves has identified at least two hypothetical worlds that might exist in our own Milky Way galaxy, hypothetically orbiting stars 70 and 110 light-years away.
She said the two stars, called HD 76932 and HD 201891, were born in our galaxy's turbulent past but could have 'biospheres more advanced' than our own planet.
Continents form thanks to plate tectonics, which invo five billion years of plates of rock that flo Earth op the molten insides of a planet. one his is the result of heat from radioactive processes within the planet's interior causing these plates to move.
University of Cambridge astrobiologist said alien crea Cardiff University's metrical bo Jane Greaves ngs, legs or fin at least two uld also be intelligent, have a developed language and possibly technology.
He added th 70 huma 110 might be able to 'have tea with an alien' if we came into contact with them. the American Astronomical Society MailOnline ss="summaryFeed_highLightText__NxlGi">The University of Cambridge Darwinian Earth tText__NxlGi">Galaxy Greaves xlGi">The Zoologist's Guide Arik Kershenbaum Earth Earth
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