COSMIC TEST

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Question 1: What is the name of the very old planet that is like a great-great-great-great-great-grandpa planet?
Question 2: How many stars does the planet PSR B1620-26 b orbit?
Question 3: What is the name of the planet that is part of a big family of planets living close to their star?
Question 4: What kind of telescope is used to find planets like Kepler-11 f?
Question 5: What planet is like a bigger cousin of Earth?
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