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Astronomy Picture of the Day
Galaxy Group Hickson 31
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#112375
by
[z]Barbara Harris
@
23.02.2010 00:00
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Galaxy Group Hickson 31
Explanation: Will the result of these galactic collisions be one big
elliptical galaxy
? Quite possibly, but not for
another billion
years.
Pictured above
, several of the
dwarf galaxies
of in the
Hickson Compact Group 31
are seen slowly merging. Two of the brighter galaxies are colliding on the far left, while an
elongated galaxy
above is connected to them by an unusual
bridge of stars
. Inspection of the
above image
further indicates that the bright duo trail a rope of stars pointing to the
spiral galaxy
on the far right. Most assuredly, the pictured galaxies of
Hickson Compact Group
31 will pass through and destroy each other, millions of stars will
form
and
explode
, and thousands of nebula will
form
and dissipate before the
dust
settles and the final galaxy emerges about one billion years from now. The
above image
is a composite of images taken in
infrared light
by the
Spitzer Space Telescope
,
ultraviolet light
by the
GALEX space telescope
, and
visible light
by the
Hubble Space Telescope
. Hickson Compact Group 31 spans about 150 thousand
light years
and lies about 150 million light years away toward the constellation of
Eridanus
. digg_url = 'http://apod.nasa.gov/apod/ap100222.html'; digg_skin = 'compact';
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