Credit & Copyright: Petr Horclek /
Institute of Physics in Opava
Explanation:
What glows in the night?
This night
featured a combination of usual and unusual glows.
Perhaps the most usual glow was from
the Moon, a potentially familiar object.
The full Moon's nearly
vertical descent results from the observer being near
Earth's equator.
As the Moon sets,
air and
aerosols in
Earth's atmosphere preferentially scatter out blue light, making
the
Sun-reflecting satellite appear reddish when
near the horizon.
Perhaps the most
unusual glow
was from the bioluminescent
plankton, likely less familiar objects.
These microscopic creatures glow blue, it is thought, primarily to
surprise
and
deter predators.
In this case, the glow was caused primarily by
plankton-containing waves crashing onto the beach.
The image was taken on
Soneva Fushi Island,
Maldives just over
one year ago.
Your Sky Surprise:
What picture did APOD feature on your birthday? (post 1995)
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:
full moon - polnolunie
Publikacii so slovami: full moon - polnolunie | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
