Hubble Sees Evaporating Planet Getting The Hiccups

A young planet whirling around a petulant red dwarf star is changing in unpredictable ways orbit-by-orbit. It is so close to its parent star that it experiences a consistent, torrential blast of energy, which evaporates its hydrogen atmosphere – causing it to puff off the planet. But during one orbit observed with the Hubble Space Telescope, the planet looked like it wasn’t losing any material at all, while an orbit observed with Hubble a year and a half later showed clear signs of atmospheric loss. For more information, visit https://nasa.gov/hubble. Credit: NASA's Goddard Space Flight Center Paul Morris: Lead Producer Cassandra Morris: Narrator Music Credit “Red Shift” by Arun Ganapathy [BMI], David Naroth [BMI], and Victor Mercader [BMI] via Emperia Beta Publishing [BMI], and Universal Production Music. Animation Credit: Light interacting with atmosphere: ESA/Hubble, M. Kornmesser Escaping atmosphere of an exoplanet: ESA/Hubble, NASA, M. Kornmesser Planet orbiting a red dwarf star (artist's impression):