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APOD: 2023 October 25 Á Gone in 60 Seconds: A Green Flash Sunset
| << Yesterday | 24.10.2023 | Tomorrow >> |
Credit & Copyright: Tengyu Cai
Explanation:
In 60 seconds, this setting Sun will turn green.
Actually, the top of
the Sun
already appears not only green, but wavey -- along with all of its edges.
The Sun itself is unchanged -- both
effects are caused by
looking along hot and cold layers in Earth's atmosphere.
The unusual color is known as a
green flash
and occurs because these atmospheric layers not only shift background images but
disperse colors into slightly different directions, like a
prism.
The featured video was captured earlier this month off the coast of
Hawaii,
USA.
After waiting
those 60 seconds,
at the video's end, the upper part of
the Sun seems to hover alone in space,
while turning not only
green, but
blue.
Then suddenly, the Sun appears to shrink to nothing -- only to return tomorrow.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: green flash - Sun
Publications with words: green flash - Sun
See also:
- APOD: 2024 February 19 Á Looking Sideways from the Parker Solar Probe
- Circling the Sun
- APOD: 2023 December 11 Á Solar Minimum versus Solar Maximum
- APOD: 2023 November 19 Á Space Station, Solar Prominences, Sun
- Circular Sun Halo
- APOD: 2023 August 1 Á Monster Solar Prominence
- APOD: 2023 July 11 Á Sunspots on an Active Sun