Credit & Copyright: Tony Hallas
Explanation:
These are galaxies of the
Hercules
Cluster, an archipelago of
island universes a mere
500 million light-years away.
Also known as
Abell 2151,
this cluster is loaded with gas and dust rich,
star-forming spiral galaxies
but has relatively few elliptical galaxies,
which lack gas and dust and the associated newborn stars.
The colors in
this remarkably
deep composite image
clearly show the star forming galaxies with a blue tint and
galaxies with older stellar populations with a yellowish cast.
The sharp picture spans about 1/2 degree across the
cluster center, corresponding to over 4 million light-years at the
cluster's estimated distance.
In the cosmic vista many galaxies seem to be
colliding or
merging
while others seem
distorted - clear evidence that
cluster galaxies
commonly interact.
In fact, the Hercules Cluster itself may be seen as the result of
ongoing mergers of smaller galaxy clusters and is thought to be
similar to young galaxy clusters in
the much more distant,
early Universe.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Publikacii s klyuchevymi slovami:
Skoplenie galaktik - cluster of galaxies
Publikacii so slovami: Skoplenie galaktik - cluster of galaxies | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
