This stamp highlights the marvel of engineering that is Webb, an observatory designed to study some of the oldest and most distant objects in space.

This cage-like dust structure partly holds in a ghostly blue glow called synchrotron emission, which looks like wisps of smoke. This glow is caused by the Crab Nebula’s central pulsar, a fast-spinning dead star with a strong magnetic field. The blue lines follow that magnetic field, creating a smoky, ribbon-like effect.

Now featured on a new Priority Mail stamp, the image symbolizes both the wonder of space and the power of human innovation—bringing the mysteries of the universe a little closer to home.