CG4: A Ruptured Cometary Globule . ... Credit Copyright: Jason Jennings ( cosmicphotos ) Explanation: Can a gas cloud grab a galaxy? ... The "claw" of this odd looking "creature" in the above photo is a gas cloud known as a cometary globule . This globule, however, has ruptured. Cometary globules are typically characterized by dusty heads and elongated tails . ... The galaxy to the left of the globule is huge, very far in the distance, and only placed near CG4 by chance superposition. ...