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Astronomy Picture of the Day
M1: The Crab Nebula from NOT
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#79931
by
[z]Barbara Harris
@
21.09.2005 00:00
- nach oben -
M1: The Crab Nebula from NOT
Explanation: This is the mess that is left when a star explodes. The
Crab Nebula
, the result of a
supernova
seen in
1054 AD
, is filled with mysterious filaments. The
filaments
are not only tremendously complex, but appear to have
less mass than expelled
in the original supernova and a
higher speed than expected
from a free explosion. The
above image
, taken by the
Nordic Optical Telescope
(NOT), is in three colors chosen for scientific interest. The
Crab Nebula
spans about 10
light-years
. In the nebula's very center lies a
pulsar
: a
neutron star
as massive as the
Sun
but with only the size of a
small town
. The
Crab Pulsar
rotates about 30 times each second.
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