Resembling a swarm of flickering fireflies, this beautiful galaxy cluster glows intensely in the dark cosmos, accompanied by the myriad bright lights of foreground stars and swirling spiral galaxies. A1758N is a sub-cluster of Abell 1758, a massive cluster containing hundreds of galaxies. Although it may appear serene in this NASA/ESA Hubble Space Telescope image, the sub-cluster actually comprises two even smaller structures currently in the turbulent process of merging.
The release, images and videos are available on:
http://www.spacetelescope.org/news/heic1801/
Kind regards,
ESA/Hubble Information Centre
The ESO Education and Public Outreach Department
18 January 2018
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