The name says it all. The nebula around PSR B1509-58 looks like a hand reaching out to grasp the red light. The blue is an added color to highlight the structure. The red light is a neighboring gas cloud to the blue hand. The structure is roughly 150 light years across and 17,000 light years away.
Picture embedded below. (From http://ace.mu.nu/archives/285476.php)
More at http://www.space.com/scienceastronomy/090404-chandra-nebula.html.