Comet caught strangely zigzagging its way through space

It doesn't have the name recognition of Halley's Comet, but this enormous snowball zipping through space has fascinated at least one astronomer night after summer night for its shape-shifting tail. Dan Bartlett, an astrophotographer based in east-central California, caught Comet Olbers zigzagging across the night sky this week. But each time he looks up through binoculars or his camera, the comet takes a different form."This is the first time we've been able to witness this creature's behav