Red Sprite Lightning over the Czech Republic
What are those red filaments in the sky?
They are a rarely seen form of
confirmed only about 35 years ago:
has shown that following a powerful positive
red sprites may start as 100-meter balls of
air that shoot down from about
80-km high at 10 percent the speed of light.
by a group of upward streaking ionized balls.
was taken late last month from the
Jeseniky Mountains in northern
Moravia in the
The distance to the
is about 200 kilometers.
Red sprites take only a
fraction of a second to occur
and are best seen when
s are visible from the side.
APOD in world languages:
Authors & editors:
NASA Web Site Statements, Warnings,
NASA Official: Jay Norris.
A service of:
& Michigan Tech. U.
Publications with keywords: lightning
Publications with words: lightning