How old is the oldest known planet? Almost as old as the universe, it turns out. The 12.7 billion-year-old planet PSR b 1620-26 b is about three times the age of Earth, which formed about 4.5 billion years ago. Language: English
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How old is the oldest known planet? Almost as old as the universe, it turns out. The 12.7 billion-year-old planet PSR b 1620-26 b is about three times the age of Earth, which formed about 4.5 billion years ago. Language: English