Westerlund 2

Westerlund 2, a giant cluster of 3,000 stars, resides in a raucous stellar breeding ground known as Gum 29

30 Doradus

This Hubble Space Telescope image captures two clusters full of massive stars that may be in the early stages of merging.

Globular Cluster NGC 1850, Take One

This is a spherical collection of densely packed stars held together by mutual gravitational attraction.

NGC 3603

Like a fireworks display, a young, glittering collection of stars looks like an aerial burst. The cluster of huge, hot stars called NGC 3603 is surrounded by clouds of interstellar gas and dust — the raw material for new star formation

Cosmic Reef

This Hubble Space Telescope image shows how young, energetic, massive stars illuminate and sculpt their birthplace with powerful winds and searing ultraviolet radiation.

NGC 6440

Looking like a glittering swarm of buzzing bees, the stars of globular cluster NGC 6440 shine brightly in this Hubble Space Telescope image.