This Herschel image of the Rosette nebula is about 65 light years across. The red is cooler gas and dust, while the blue is warmer material.
The Rosette Nebula is a cloud of dust, about 5500 light years away, containing enough gas and dust to make about 10,000 stars like our Sun. In the centre of the nebula, and off to the right hand side of this image, is a cluster of hot, bright young stars.
After a few million years, when they have consumed their vast amounts of fuel, these stars will die in supernovae, distributing their material throughout the neighbourhood and seeding further generations of stars.
Via the UK Space Agency