Very Large Array, GRB 090423 And A Peek Into The Early Universe
Thursday, October 29, 2009 - 15:28
in Astronomy & Space
An explosion detected on April 23 by NASA's Swift satellite was more than 13 billion light-years from Earth, representing an event that occurred 630 million years after the Big Bang, when the Universe was only four percent of its current age of 13.7 billion years. Astronomers turned telescopes from around the world to study the blast, dubbed GRB 090423. National Science Foundation's Very Large Array (VLA) first looked for the object the day after the discovery, detected the first radio waves from the blast a week later, then recorded changes in the object until it faded from view more than two months later. read more