The picture reveals NGC 248, about 60 light-years lengthy and 20 light-years huge. They're two nebulas, located to seem as one. The nebulas, collectively, are referred to as NGC 248.
Initially found in 1834 by the astronomer Sir John Herschel, NGC 248 resides within the Small Magellanic Cloud, positioned roughly 200,000 light-years away within the southern constellation Tucana.
Small Magellanic Cloud is a dwarf galaxy that may be a satellite tv for pc of our Milky Method galaxy. The picture is a part of a examine referred to as Small Magellanic Cloud Investigation of Mud and Gasoline Evolution (SMIDGE).
The dwarf satellite tv for pc galaxy comprises a number of sensible hydrogen nebulas, together with NGC 248. Intense radiation from the sensible central stars is heating hydrogen in every nebula, inflicting them to glow purple.
The examine’s principal investigator, Dr. Karin Sandstrom of the College of California, San Diego, mentioned, “The Small Magellanic Cloud has between a fifth and a tenth of the quantity of heavy parts that the Milky Method does. As a result of it's so shut, astronomers can examine its mud in nice element and study what mud was like earlier within the historical past of the universe.”
“It's important for understanding the historical past of our galaxy, too. A lot of the star formation occurred earlier within the universe, at a time when there was a a lot decrease proportion of heavy parts than there's now. Mud is a important a part of how a galaxy works, the way it types stars.”
The picture is a part of a examine referred to as Small Magellanic Cloud Investigation of Mud and Gasoline Evolution (SMIDGE). The info used on this picture had been taken with Hubble’s Superior Digital camera for Surveys in September 2015.
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