Hubble recently complemented an earlier "deep field" observation of the northern hemisphere by peering down a 12-billion-light-year-long corridor in the southern sky. It revealed a dazzling array of far-flung, previously unseen galaxies. Cosmological theory predicts that the sky should look the same in all directions. What do these observations reveal?

World-renowned astronomers discuss that question during this Web simulcast. Marc Steiner's guests include Dr. Carol Christian, STScI; Dr. Mark Dickinson, STScI; and Jim O'Leary, Baltimore Science Museum.

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