... Comet Ikeya Zhang Brightens . ... Simulated Galaxy Cluster View . ... A large, elliptical galaxy dominates this hypothetical cluster's central region surrounded by a swarm of member galaxies. ... Blue oceans dominate our world, while areas of green forest, brown mountains, tan desert, and white ice are also prominent. ... Jets from Radio Galaxy 3C296 . ... Jets of streaming plasma expelled by the central black hole of a massive elliptical galaxy likely light up this composite image of 3C296. ...