zorg.ch
19:05 Uhr
Events
Forum
Games
Wetten
Rezepte
Tauschbörse
Books
Space
User
Übersicht
Astronomy Picture of the Day
Comet Hale-Bopp Over Val Parola Pass
Bild Note: 2
(2 Votes)
⏴ previous
Bild Upload von 18.02.2016 21:43
next ⏵
zorg.ch
#105697
by
[z]Barbara Harris
@
03.03.2008 00:00
- nach oben -
Comet Hale-Bopp Over Val Parola Pass
Explanation:
Comet Hale-Bopp
,
the Great Comet of 1997,
became much brighter than any surrounding stars.
It was seen even over
bright city lights
.
Away from city lights, however, it put on quite a
spectacular show
.
Here
Comet Hale-Bopp was photographed
above Val Parola Pass in the
Dolomite
mountains
surrounding
Cortina
d'Ampezzo
,
Italy
.
Comet Hale-Bopp
's
blue
ion tail
, consisting of
ions
from the
comet's nucleus
,
is pushed out by the
solar wind
.
The white
dust tail
is composed of larger particles of
dust
from the nucleus driven by
the pressure of sunlight, that orbit behind the
comet
.
Observations showed that
Comet Hale-Bopp
's nucleus spins about once every 12 hours.
digg_url = 'http://apod.nasa.gov/apod/ap080302.html'; digg_skin = 'compact';
Credit & Copyright