Finding That There Are Many Solar Systems
Planet-seekers who have spotted 28 new planets orbiting other stars in the past year say Earth’s solar system is far from unique and there could be billions of habitable planets.
“We are beginning to see that our home is not a rarity in the universe,” said Geoffrey Marcy, a professor of astronomy at the University of California Berkeley, who led the team.
It is the first time we have determined the structure of one of these extrasolar planets. It is rocky like Earth but it has a lot of water which is the essential ingredient for life.”
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