November 5, 2008--The Crab Nebula's gas and dust create a swirling, smoky cloud around the powerful pulsar (white dot seen above) at its center.

This Chandra X-Ray Observatory image provides the first good look at the inner boundary (white) between matter and antimatter particles from the pulsar and the blue x-ray glow created by electrons and positrons--an antimatter companion to an electron--in the surrounding nebula.

The nebula's magnetic field and filaments of cooler matter guide the motions of these particles to form distinctive fingers, loops, and other shapes.