M82

Image credits: Image 1: NASA/SAO/G.Fabbiano et al. Image 2: NASA/CXC/JHU/D.Strickland Image 3: NASA/CXC/Wesleyan/R.Kilgard et al. Info: https://chandra.harvard.edu/photo/2001/0094true/ "An ultraluminous X-ray source (ULX) in the galaxy M82 - 11 million light years from Earth - is the main subject of the image. This galaxy is known for being a starburst galaxy, which means that it is experiencing an intense period of star formation." https://chandra.harvard.edu/photo/2006/m82/ "The burst of star formation in M82 is thought to have been initiated by shock waves generated in a close encounter with a large nearby galaxy, M81, about 100 million years ago. These shock waves triggered the collapse of giant clouds of dust and gas in M82. In another 100 million years or so, most of the gas and dust will have been used to form stars, or blown out of the galaxy, so the starburst will subside. https://chandra.harvard.edu/photo/2011/m82/