How Global Warming Affects Astronomical Observations

How Global Warming Affects Astronomical Observations

The VLT’s Laser Guide Star: A laser beam launched from the VLT’s 8.2-meter Yepun Telescope streaks across the majestic southern sky and creates an artificial star 90 km high in Earth’s upper mesosphere. The Laser Guide Star (LGS) is part of the VLT’s adaptive optics system and is used as a reference to correct images …

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