A Flight Through the Universe . ... Possibly the best simulated video of this yet has been composed from recently-released galaxy data from the Sloan Digital Sky Survey . ... Analyses of galaxy positions and movements continues to bolster the case that our universe contains not only the bright matter seen, like galaxies, but also a significant amount of unseen dark matter and dark energy . ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...