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Астронет: Астрономическая картинка дня Молнии над вулканом Агуа http://www.astronet.ru/db/msg/1969580/eng |
Credit & Copyright: Sergio Montцfar
(Pinceladas Nocturnas)
Explanation:
Have you ever watched a lightning storm in awe?
You're not alone.
Details of what causes
lightning are still
being researched, but it is known that
inside some clouds, internal updrafts cause collisions
between ice and snow that slowly
separate charges between cloud tops and bottoms.
The
rapid electrical discharges that are
lightning soon result.
Lightning usually takes a jagged course,
rapidly heating a thin column
of air to about three times the surface temperature of the
Sun.
The resulting shock wave starts
supersonically and decays into the
loud
sound known as
thunder.
On average, around the world, about
6,000 lightning bolts occur between clouds and the
Earth every minute.
Pictured in July 2019 in a two-image composite,
lightning stems from communication antennas near the top of
Volcцn de Agua
(Volcano of Water) in
Guatemala.
Sky Surprise:
What picture did APOD feature on your birthday? (post 1995)
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.