Location of star-forming region in M51

https://www.esa.int/ESA_Multimedia/Images/2026/05/Location_of_star-forming_region_in_M51

A graphic showing three images of spiral galaxy M51. The top image spans the spiral arms and the galactic centre. A large upright portion of the spiral arm on the left is highlighted in a box, which expands to the image on the left, showing the area in more colour and greater detail. This image has a scale bar labelled “1000 light-years”. A square indicates a cloud of gas, shown enlarged on the right with a scale bar “100 light-years”.