Rosette Nebula: The Heart of a Rose
The X-rays reveal hundreds of young stars clustered in the center of the image and additional fainter clusters on either side.
In red, the young stars look like a path of rose petals through the heart of the nebula.
Image credit: X-ray (NASA/CXC/SAO/J. Wang et al), Optical (DSS & NOAO/AURA/NSF/KPNO 0.9-m/T. Rector et al) Larger image