NASA released a Hubble Space Telescope image of Messier 3, a globular cluster packed with more than 500,000 stars.
The cluster, also catalogued as M3, appears in the image with stars rendered in red, white, and blue, according to NASA. The range of colors across the densely packed field reflects the variety of stars present within the cluster.
NASA reported that the Hubble Space Telescope was the instrument used to capture the image. Hubble has long been used to photograph deep-sky objects, and this image of M3 continues that work. The cluster's stellar population, which NASA puts at more than 500,000 individual stars, fills the frame in the released photograph.
Messier 3 is a globular cluster, a type of tightly bound stellar grouping. NASA's image shows those stars spread across the field in the three colors, red, white, and blue, giving the cluster a vivid appearance in the Hubble photograph.