Hubble Detects "Sunscreen" Layer on Distant Planet
ANIMATION Using NASA’s Hubble Telescope, scientists detected a stratosphere on the planet WASP-33b. A stratosphere occurs when molecules in the atmosphere absorb ultraviolet and visible light from the star. This absorption warms the stratosphere and acts as a kind of sunscreen layer for the planet below.
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The presence of a stratosphere can provide clues about the composition of a planet and how it formed. This atmospheric layer includes molecules that absorb ultraviolet and visible light, acting as a kind of “sunscreen” for the planet it surrounds. Until now, scientists were uncertain whether these molecules would be found in the atmospheres of large, extremely hot planets in other star systems.
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ILLUSTRATION WASP-33b’s stratosphere was detected by measuring the drop in light as the planet passed behind its star (top). Temperatures in the low stratosphere rise because of molecules absorbing radiation from the star (right). Without a stratosphere, temperatures would cool down at higher altitudes (left).
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Credits
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio
Animator
- Britt Griswold (Maslow Media Group)
Illustrator
- Jay Friedlander (TRAX International)
Science writer
- Elizabeth Zubritsky (ADNET)
Scientist
- Avi Mandell (NASA/GSFC)
Missions
This visualization is related to the following missions:Related pages
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Sept. 12th, 2019
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Other Earths
Oct. 17th, 2013
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June 28th, 2012
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HD 189733b Exoplanet Animation
June 28th, 2012
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