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A newly found primordial blob may represent the most massive object ever discovered in the early universe, researchers announced today. The gas cloud, spotted from 12.9 billion light-years away, could signal the earliest stages of galaxy formation back when the universe was just 800 million years old. "I have never heard about any [similar] objects that could be resolved at this distance," said Masami Ouchi, a researcher at the Carnegie Institution in Pasadena, Calif. "It's kind of record-breaking." A light-year is the distance light travels in a year, about 6 trillion miles (10 trillion kilometers). An object 12.9 billion light-years...

This image of the Himiko object is a composite and in false color. The bar at the lower right represents 10,000 light years. Credit: M. Ouchi et al. This mysterious, giant object existed at a time when the universe was only about 800 million years old. It stretches for 55 thousand light years, a record for that early point in time. Its length is comparable to the radius of the Milky Way’s disk. Besides being a great candidate for a future “Where in the Universe Challenge,” what is it? In general, objects such as this one are dubbed extended...