スーパーアース

noun

super-Earth

An exoplanet with a mass higher than Earth's but substantially below that of the Solar System's ice giants. Used in astronomy and science communication.

• ケプラー宇う宙ちゅう望ぼう遠えん鏡きょうは多おおくのスーパーアースを発はっ見けんした。

  The Kepler space telescope discovered many super-Earths.