​Gliese 229B

  • The celestial object Gliese 229B, first discovered 30 years ago as a brown dwarf, is now confirmed to be two brown dwarfs orbiting each other.
  • Brown dwarfs, often called “failed stars,” are heavier than planets but too light to sustain hydrogen fusion like stars.
  • Using the Very Large Telescope in Chile, astronomers observed that Gliese 229B is actually a duo circling closely together, explaining its dimness for its mass.
  • These twin brown dwarfs orbit a small star 18 light-years away and circle each other every 12 days, much faster than typical brown dwarf pairs.
  • The discovery suggests other brown dwarfs ....
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