Optical Image Of Emission Nebula Ngc 6357 is a photograph by Royal Observatory, Edinburgh/aatb/science Photo Library which was uploaded on September 13th, 2018.
Optical Image Of Emission Nebula Ngc 6357
Optical image of the emission nebula NGC 6357, located about 5500 light years away from Earth in the constellation of Scorpius. It is a cloud of... more
Title
Optical Image Of Emission Nebula Ngc 6357
Artist
Royal Observatory, Edinburgh/aatb/science Photo Library
Medium
Photograph
Description
Optical image of the emission nebula NGC 6357, located about 5500 light years away from Earth in the constellation of Scorpius. It is a cloud of hydrogen (60 light years across) ionised and lit up by young, hot, blue stars embedded in it. However, NGC 6357 does not show any evidence of a blue component in its colour. This is due to a phenomenon, known as interstellar reddening, caused by clouds of dust situated between the nebula and the Earth which predominantly absorb the radiation emitted at blue" wavelengths."
Uploaded
September 13th, 2018
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