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University of Arizona astronomers will help NASA's James Webb Space Telescope peer deeper into the universe than any telescope in history. Webb successfully launched on Christmas Day.
The farthest galaxy in the universe A team of astronomers used the Keck I telescope to measure the distance to an ancient galaxy. They deduced the target galaxy GN-z11 is not only the oldest galaxy but also the most distant. It's so distant it defines the very boundary of the observable universe itself. The team hopes this study can shed light on a period of cosmological history when the universe was only a few hundred million years old. We've all asked ourselves the big questions at times: "How big is the universe?" or "How and when did galaxies form?" Astronomers take these questions very s...
The farthest galaxy in the universe: Chemical signatures give away the distance A team of astronomers used the Keck I telescope to measure the distance to an ancient galaxy. They deduced the target galaxy GN-z11 is not only the oldest galaxy but also the most distant. It’s so distant it defines the very boundary of the observable universe itself. The team hopes this study can shed light on a period of cosmological history when the universe was only a few hundred million years old. We’ve all asked ourselves the big questions at times: “How big is the universe?” or “How and when did g...