This is star cluster Pismis 24, located in the heart of the emission nebula NGC 6357. It can be found in the constellation Scorpius.
I love the juxtaposition in this image: the ethereal stars, floating in the darkness above, and the turbulence of the gases below.
It has been informally named the War and Peace Nebula, which makes it a fitting image for ANZAC Day, April 25th.
Andrew R. Cameron 