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The Chandra X-ray Observatory is used to study _____. 1. the solar system’s outer planets 2. black holes 3. exploding stars 4. the sun
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The Chandra X-ray Observatory is used to study _____.

1. the solar system’s outer planets


2. black holes


3. exploding stars


4. the sun

User Alexander Revo
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Black holes that is what Chandra X-ray observatory used to study
User SQer
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5 votes
2. black holes is the correct answer
User Lscmaro
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