Weekly Science Update

The Submillimeter Array (SMA) detects galaxies in the early universe. The left frame shows the best image (rendered in visible colors) of the discovery of one of the galaxies by a conventional submillimeter camera. The center image shows the SMA picture of the region, pinpointing the source (circled). A visible-light image by the Hubble Space Telescope (right) detected nothing in the area of interest. Combined, these and other data show that the source in question is a very luminous but very distant, dusty galaxy that existed when the universe was less than about 3 billion years old.
Credit: Left, UMass /Middle, CfA /Right, HST
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