File:Serene Supernova Aftermath (potw2327a).tiff

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Captions

Captions

The spiral galaxy UGC 11860 seems to float serenely against a field of background galaxies in this image from the NASA/ESA Hubble Space Telescope.

Summary

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Description
English: The spiral galaxy UGC 11860 seems to float serenely against a field of background galaxies in this image from the NASA/ESA Hubble Space Telescope. UGC 11860 lies around 184 million light-years away in the constellation Pegasus, and its untroubled appearance can be deceiving; this galaxy recently played host to an almost unimaginably energetic stellar explosion.A supernova explosion — the catastrophically violent end of a massive star’s life — was detected in UGC 11860 in 2014 by a robotic telescope dedicated to scouring the skies for transient astronomical phenomena; astronomical objects which are only visible for a short period of time. Two different teams of astronomers used Hubble’s Wide Field Camera 3 to search through the aftermath and unpick the lingering remnants of this vast cosmic explosion.One team explored UGC 11860 to understand more about the progenitor star systems that eventually meet their demise in supernovae. The unimaginably energetic environment during supernova explosions is predominantly responsible for forging the elements between silicon and nickel on the periodic table. This means that understanding the influence of progenitor star systems’ masses and compositions is vital to explaining how many of the chemical elements here on Earth originated.The other group of astronomers used Hubble to follow up supernovae that were detected by robotic telescopes. These automated eyes on the sky function without the intervention of humans, and capture transient events in the night sky. Robotic telescopes allow astronomers to detect everything from unexpected asteroids to rare, unpredictable supernovae, and can identify intriguing objects that can then be investigated in more detail by powerful telescopes such as Hubble.[Image Description: A spiral galaxy, a fuzzy oval tilted diagonally and partially towards the viewer. The centre glows in warm colours, and has two prominent spiral arms around it, with bright points of star formation. The galaxy is central in a field of small stars and galaxies on a dark background.]
Date 3 July 2023 (upload date)
Source Serene Supernova Aftermath
Author ESA/Hubble & NASA, A. Filippenko, J. D. Lyman
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