Light pollution from satellites ‘poses threat’ to astronomy

Light pollution from satellites ‘poses threat’ to astronomy

The Guardian

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Mega-constellations could cause scientists to miss out on crucial discoveries, warn researchers

Artificial satellites and space junk orbiting the Earth can increase the brightness of the night sky, researchers have found, with experts warning such light pollution could hinder astronomers’ ability to make observations of our universe.

There are more than 9,200 tonnes of space objects in orbit around the Earth, ranging from defunct satellites to tiny fragments, according to the European Space Agency (ESA). Now it seems space junk not only poses a collision risk but, together with other space objects, is contributing to light pollution.

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