NASA - Hubble Space Telescope patch.
March 23, 2018
The exquisite sharpness of this 2005 image from NASA/ESA's Hubble Space Telescope has plucked out an underlying population of infant stars embedded in the nebula NGC 346 that are still forming from gravitationally collapsing gas clouds. They have not yet ignited their hydrogen fuel to sustain nuclear fusion. The smallest of these infant stars is only half the mass of our Sun.
Hubble Space Telescope (HST)
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Image, Animation, Text, Credits: NASA/Karl Hille/ESA and A. Nota (STScI/ESA).