Telescopes Unveil View Of Remote, Massive Galaxy Cluster
Depicts: MS1054-0321
Copyright: Isabella Gioia (Univ. of Hawaii), and NASA
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This image is a color composite taken by ground-based and
X-ray observatories showing the entire galaxy cluster surrounded by
background and foreground galaxies. The blue color in the center of the
image represents the huge amount of hot gas that fills the space between
the galaxies in the cluster. This gas - colored blue - cannot be seen in
visible light, but glows in X-ray frequencies. Astronomers have measured
its temperature at 300 million degrees Fahrenheit. The X-ray information
was used to estimate the cluster's total mass.
Last Update: 1 September 2019