The MPG/ESO 2.2-meter telescope at ESO’s La Silla Observatory in Chile captured this richly colorful view of the bright star cluster NGC 3532. Some of the stars still shine with a hot bluish color, but many of the more massive ones have become red giants and glow with a rich orange hue.
Image credit: ESO/G. Beccari
Note: For more information, see A Colorful Gathering of Middle-Aged Stars.