At the edges of the visible universe, 45 billion light-years away, sit some of the oldest known galaxies. How they formed and developed is a mystery, but a spectrograph installed on Chile's Very Large Telescope--functional since March--should help astronomers find answers. The six-foot-wide, three-ton instrument contains 24 motorized robotic arms. Each eight-inch arm controls a mirror that focuses on a single galaxy. As a result, the telescope can collect infrared readings for 24 galaxies at the...
At the edges of the visible universe, 45 billion light-years away, sit some of the oldest known galaxies. How they formed and developed is a mystery, but a spectrograph installed on Chile's Very Large Telescope--functional since March--should help astronomers find answers. The six-foot-wide, three-ton instrument contains 24 motorized robotic arms. Each eight-inch arm controls a mirror that focuses on a single galaxy. As a result, the telescope can collect infrared readings for 24 galaxies at the...
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