NASA and the European Space Agency have released an image captured by the Hubble Area Telescope of a dwarf irregular galaxy that they admit regarded “unexciting” at first look. Nevertheless, there’s extra happening than would possibly initially meet the attention. The businesses say that quite a lot of analysis goes into the “difficult construction” of NGC 5238, which is 14.5 million light-years away within the Canes Venatici constellation. In truth, astronomers imagine the distribution of stars in NGC 5238 could have been distorted after it swallowed up one other galaxy.
They reckon that attributable to NGC 5238’s star inhabitants (which Hubble is adept at serving to to picture), it had a “shut encounter” with one other galaxy maybe as not too long ago as a billion years in the past. However since there is not a galaxy shut sufficient to have distorted the star distribution on this trend, it is extra possible that NGC 5238 merged with a smaller galaxy. Together with internet hosting many stars, the galaxy is residence to globular clusters, which NASA describes as “glowing, shiny spots each inside and across the galaxy swarmed by much more stars.”
Astronomers plan to dig deep into the information to find out about NGC 5238’s previous. In the event that they discover teams of stars which have completely different properties from a lot of the galaxy’s different stars, that is a transparent indication {that a} merger has occurred. They will additionally attempt to decide whether or not there was a “burst of star formation” that abruptly befell after the galaxies would have come collectively.
NASA notes {that a} dwarf irregular galaxy merging with a smaller satellite tv for pc galaxy is simply the sort of factor that might have spurred galaxy meeting within the early period of our universe. As such, the company says that the information Hubble captured from NGC 5238 could assist researchers to check elementary concepts concerning the evolution of the universe.
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