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Astronomy Picture of the Day
M82: Galaxy with a Supergalactic Wind
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#86050
by
[z]Barbara Harris
@
26.04.2006 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
, released yesterday to commemorate the
sixteenth anniversary
of the
Hubble Space Telescope
,
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
Ursa Major
.
Credit & Copyright