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Wallpaper: Dwarf Galaxy NGC 4449

Image 46 of 84
Dwarf Galaxy NGC 4449
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About This Image

An interaction or merger with another galaxy probably triggered the rapid star formation in this small galaxy. The unusually explosive and intense star star-formation activity is called a starburst.

Credit: NASA, ESA, A. Aloisi (STScI/ESA), and The Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration

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