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Why an 'unexciting' galaxy could provide clues about the universe's evolution
The Hubble Space Telescope has imaged a dwarf galaxy that may have merged with a smaller satellite galaxy. If so, the data could help test fundamental theories about the universe's evolution.
The agencies say that a great deal of research is going into the "complicated structure" of NGC 5238, which is 14.5 million light-years away in the Canes Venatici constellation. They reckon that due to NGC 5238's star population (which Hubble is adept at helping to image), it had a "close encounter" with another galaxy perhaps as recently as a billion years ago. As such, the agency says that the data Hubble captured from NGC 5238 may help researchers to test fundamental ideas about the evolution of the universe.
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