The level of star forming activity in the Orion-KL region in the Orion nebula is comparable to the central region of J1148+5251, but confined to a much smaller volume of space.
(Courtesy: NASA, ESA, Robberto (STScI/ESA),Orion Treasury Project Team)
Diameter of a mere 4K light-years (by comparison: the Milky Way galaxy's diameter ranges to 100,000 light-years), the star-forming core of J1148+5251 is extremely productive in short.
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