File:PIA19345 Helium Atmosphere Formation 0 .png
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Summary
| Description |
English: PIA19345: How to Make a Helium Atmosphere – initial stage
http://photojournal.jpl.nasa.gov/catalog/PIA19345 NASA's Spitzer Space Telescope observed a proposed helium planet, GJ 436b. This diagram illustrates how hypothetical helium atmospheres might form. These would be on planets about the mass of Neptune, or smaller, which orbit tightly to their stars, whipping around in just days. They are thought to have cores of water or rock, surrounded by thick atmospheres of gas. Radiation from their nearby stars would boil off hydrogen and helium, but because hydrogen is lighter, more hydrogen would escape. It's also possible that planetary bodies, such as asteroids, could impact the planet, sending hydrogen out into space. Helium Atmospheres on Warm Neptunes Spitzer Space Telescope For more information about Spitzer, visit http://spitzer.caltech.edu and http://www.nasa.gov/spitzer. |
| Date | |
| Source | https://photojournal.jpl.nasa.gov/tiff/PIA19345.tif |
| Author | NASA / JPL-Caltech / R. Hu (JPL) |
| Other versions |
File:PIA19345-HeliumAtmosphereFormation-20150611.jpg (composite) |
Licensing
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:09, 30 March 2019 | | 2,284 × 918 (112 KB) | Incnis Mrsi | =={{int:filedesc}}== {{Information |description={{en|1=PIA19345: How to Make a Helium Atmosphere – initial stage http://photojournal.jpl.nasa.gov/catalog/PIA19345 NASA's Spitzer Space Telescope observed a proposed helium planet, GJ 436b. This diagram illustrates how hypothetical helium atmospheres might form. These would be on planets about the mass of Neptune, or smaller, which orbit tightly to their stars, whipping around in just days. They are thought to have cores of water or rock, surr... |
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