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The stars in our night sky are vanishing at an alarming rate.

New data published in the journal Science \u2014collected by citizen scientists around the world over more than a decade\u2014 shows the night sky is continuing to become less starry.

That's largely due to light pollution from urban settlements, street lighting, and cars.

Astrobiologist Hari Mogosanu says that a clear sky isn't just a nice-to-have thing.

She says too much light and satellites means that we can't see objects travelling towards the Earth.

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