Credit & Copyright: Cui Yongjiang
Explanation:
Long after sunset on January 25 an unusually
intense red airglow floods this south-looking skyscape.
The scene was recorded with a long exposure using a
digital camera over Yunnan Province in southwest China.
At best faintly visible to the eye, the lingering airglow is
due
to chemiluminescence, the
production of light through chemical excitation.
Originating at an altitude similar to aurora,
it can found around the globe.
The chemical energy is initially provided by the
Sun's extreme ultraviolet radiation
On this night, despite the luminous atmosphere,
the band of the Milky Way clearly stretches above the horizon
with bright star Sirius near the top of the frame.
Both airglow and starry sky are beautifully reflected in region's watery
Yuanyang
rice terraces below.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Publikacii s klyuchevymi slovami:
sky - atmosfernye yavleniya - himicheskie reakcii
Publikacii so slovami: sky - atmosfernye yavleniya - himicheskie reakcii | |
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