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Oldest ever: 5 planets found orbiting an 11.2-billion-year-old sun
Oldest ever: 5 planets found orbiting an 11.2-billion-year-old sun

The oldest planetary system ever found has been spotted by astronomers. The ancient star and five small, Earth-like planets are about 11.2 billion years old. Until now, scientists weren’t certain that rocky planets could have formed so long ago, when the universe was five times younger than it is today. Now they know for sure that they did, according to a new study in the Astrophysical Journal.  The discovery also suggests that ancient life in our universe is more likely than was previously thought, scientists say. "It hints that old system planets are possible," said Sarbani Basu, an astronomy professor at Yale and an author of the paper. "And if those...

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