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Astronomy Picture of the Day
A Comet Tail Horizon
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#98395
by
[z]Barbara Harris
@
25.01.2007 00:00
- nach oben -
A Comet Tail Horizon
Explanation:
What's happening over the horizon?
Many a
sky enthusiast
who thought they had
seen it all had never seen anything like this.
To the surprise of many Northern Hemisphere observers, the tail of
Comet McNaught
remained visible even after the comet's head set ahead of the Sun.
What's more, visible were bright but extremely rare
filamentary striae
from the comet's expansive dust tail.
The cause of dust tail striae are not known for sure, but are possibly related to
fragmentation
of comet's nucleus.
The last comet to show
prominent striae
was
Comet Hale-Bopp
in 1997.
Pictured above
, the tail of
Comet McNaught
was caught just after sunset last Friday
above the
Carnic Alps
of northern
Italy
.
Credit & Copyright