A Wolf-Rayet Bubble Nebula surrounds a Wolf-Rayet star. There are different types of WR-nebula, based on their formation mechanism: regions nebulae bubbles hydrogen voids and shells (may be assoc. The nebula shown is a 'wind-blown bubbles' type
aka NGC 5194 the Whirlpool aka NGC 5195 (left) The Whirlpool Galaxy is a grand-design spiral galaxy, interacting with NGC a dwarf galaxy. Both galaxies are located 23 ± 4 million light-years away in Canes Venatici.
This image from Nasa's Spitzer Space Telescope shows a stellar nursery containing thousand of young stars & developing protostars near the sword of the constellation Orion. I heart the Spitzer space telescope.