Some galaxies hit a point in their lives when their star formation is snuffed out, and they become "quenched". Quenched galaxies in the distant past appear to be much smaller than the quenched galaxies in the Universe today. This has always puzzled astronomers — how can these galaxies grow if they are no longer forming stars? A team of astronomers has now used a huge set of Hubble observations to give a surprisingly simple answer to this long-standing cosmic riddle.
The release, images and videos are available on:
http://www.spacetelescope.org/news/heic1313/
Kind regards,
ESA/Hubble Information Centre
The ESO Education and Public Outreach Department
1 August 2013
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26 July 2013: ESA/Hubble have launched a new newsletter to promote technical and operational news about the Hubble Space Telescope to European users and the scientific community. Released quarterly, this newsletter will ...
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