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University of Bern

The VLT's Laser Guide Star: A laser beam launched from VLT´s 8.2-metre Yepun telescope crosses the majestic southern sky and creates an artificial star at 90 km altitude in the high Earth´s mesosphere. The Laser Guide Star (LGS) is part of the VLT´s Adaptive Optics system and it is used as reference to correct images from the blurring effect of the atmosphere.

How global warming affects astronomical observations

Categories Earth, Energy & Environment, Physics & Mathematics, Space

Our sleep brainwaves show how risk-seeking we are

Categories Brain & Behavior

Ocean temperature reconstructed over the last 700,000 years

Categories Earth, Energy & Environment

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