褐かっ色しょく矮わい星せい

noun

brown dwarf

Astronomy term for a substellar object that is not massive enough to sustain hydrogen fusion.

• 褐かっ色しょく矮わい星せいは恒こう星せいと惑わく星せいの中ちゅう間かんの天てん体たいです。

  A brown dwarf is a celestial body intermediate between a star and a planet.