Nine out of ten 'Twin Earths' in distant star systems could harbour complex alien life, scientists claim
Aliens could be more common than thought, as nine out of ten Earth-like planets that orbit two distant stars could have the right conditions for life, a study has found.
Known as binary stars, these systems make up about one in two solar systems — bringing the discovery of extra-terrestrial life a step closer.
These binary systems are more likely to have Earth-like worlds with a titled planetary axis that undergoes only mild changes with time — a setup agreeable to life.
Astrophysicist Billy Quarles of the Georgia Institute of Technology and colleagues found that 87 per cent of so-called 'exo-Earths' — distant worlds similar in size to our planet — should have axial tilts as steady as the Earth's.
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