An artist's impression of WASP-69b orbiting its host star. The shedding atmosphere forms a comet-like tail behind the planet.
An artist's impression of WASP-69b orbiting its host star. The shedding atmosphere forms a comet-like tail behind the planet.
  • Astronomers have observed a shrinking, Jupiter-sized planet with a comet-like tail in its wake.
  • The planet orbits so closely to its host star that its atmosphere is boiling and shedding away.
  • Scientists say studying WASP-69b can teach us about how planets and stars evolve over time.

Astronomers have nabbed a rare opportunity to watch a planet shrink in real-time.

The Jupiter-sized planet, located 160 light years away, is orbiting its host star so closely that the star is boiling the planet's atmosphere.