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Astronomy Picture of the Day
M82: Galaxy with a Supergalactic Wind
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#113599
by
[z]Barbara Harris
@
27.03.2012 00:00
- nach oben -
M82: Galaxy with a Supergalactic Wind
Explanation: What's lighting up the Cigar Galaxy?
M82
, as this
irregular galaxy
is also known, was stirred up by a
recent pass
near large
spiral
galaxy
M81
. This doesn't fully explain the source of the red-glowing outwardly
expanding gas
, however.
Recent evidence
indicates that this gas is being
driven out
by the combined emerging
particle winds
of many stars, together creating a galactic
superwind
.. The
above photographic mosaic
highlights a specific color of red light strongly emitted by ionized
hydrogen
gas, showing detailed filaments of this gas. The filaments extend for over 10,000
light year
s. The 12-million light-year distant
Cigar Galaxy
is the brightest galaxy in the sky in
infrared
light, and can be seen in visible light with a small
telescope
towards
the
constellation
of the Great Bear (
Ursa Major
). Venus + Jupiter:
See recent images of the after-sunset conjunction
Credit & Copyright