Nebula Carina VII Panorama Part of the nebula is

Part of the nebula is ionised by the youngest (bluest) heavy stars in Pismis 24

3 miles across)

Across the expanse of Saturn's rings

which plays host to some of the highest-mass stars in our galaxy

Nebula Carina VII Panorama Part of the nebula isA Bok globule nicknamed the "caterpillar" appears at the right. Its glowing edge indicates that it is being photoionized by the hottest stars in the cluster. It has been hypothesized that stars may form inside such dusty cocoons. The top of the Keyhole Nebula, the most prominent feature embedded inside Carina, is on the left. Another Bok globule is in the foreground. Credit for Hubble Image: NASA, ESA, N. Smith (University of California, Berkeley),