Only 100 years ago the Milky Way was visible from central Paris. Here’s how we can get the night sky back

By Brad E Tucker, Astrophysicist/Cosmologist, Australian National University

For the more than 100,000 years humans have been on Earth, we have looked up at night and seen the stars and our celestial home, the Milky Way galaxy. Cultures all around the world have stories and records incorporating this majestic, sublime sight.

However, nearly 3 billion people can no longer see the Milky Way when they look skyward at night. In turn, their connection to the cosmos – and to the sense of deep time it represents – has also…

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