Centaurus A
A mere 11 million light-years away,
Centaurus A
is the closest
active
galaxy to planet Earth.
Also known
as NGC 5128,
the peculiar elliptical galaxy is over 60,000 light-years across.
A region spanning about 8,500 light-years, including the galaxy's center
(upper left), is framed in this sharp
Hubble Space telescope close-up.
Centaurus A is apparently the result of a
collision of two otherwise normal galaxies
resulting in a violent jumble of star forming regions, massive
star clusters, and imposing dark dust lanes.
Near the galaxy's center, left over
cosmic debris is steadily being consumed by a central black hole with about
60 million times the mass of the Sun.
As
in other active galaxies, that process likely generates the radio,
X-ray, and gamma-ray energy
radiated by Centaurus A.