ဝှာင်:Neptune Cloud Cover Over Three Decades (2023-019).png
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English: This sequence of Hubble Space Telescope images chronicles the waxing and waning of the amount of cloud cover on Neptune. This long set of observations shows that the number of clouds grows increasingly following a peak in the solar cycle – where the Sun's level of activity rhythmically rises and falls over an 11-year period.
The chemical changes are caused by photochemistry, which happens high in Neptune's upper atmosphere and takes time to form clouds. In 1989, NASA's Voyager 2 spacecraft provided the first close-up images of linear, bright clouds, reminiscent of cirrus clouds on Earth, seen high in Neptune's atmosphere. They form above most of the methane in Neptune's atmosphere and reflect all colors of sunlight, which makes them white. Hubble picks up where the brief Voyager flyby left off by continually keeping an eye on the planet yearly. NASA, ESA, Erandi Chavez (UC Berkeley), Imke de Pater (UC Berkeley) |
| စၟတ်တ္ၚဲ | ၁၇ အဝ်ဂေတ် ၂၀၂၃ (upload date) |
| တမ်ရိုဟ် | Neptune Cloud Cover Over Three Decades |
| ကဝိ | Science |
| အခြား ဗားရှင်းများ |
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This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag. |
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