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ARC-Easy / Mercury_7146108 / Planets outside of our solar system have been detected. What suggested the…

Problem

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question

Planets outside of our solar system have been detected. What suggested the presence of a planet outside of our solar system?

choices

  • radio wave emissions
  • a wobble in the rotation of the star
  • regular occurring eclipses of its moons
  • the discovery of a star as large as our own

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