World Space Week: astronomy in an age of satellite constellations

There were 4,852 active satellites in orbit around Earth at the beginning of 2022, and the number is growing rapidly.

The night sky is a resource open to all of us, but it’s rapidly becoming a ‘tragedy of the commons’ scenario. Thousands of satellites in the night sky are not only ruining the beauty of the stars, but are seriously hampering astronomers and pose a very serious space debris threat.

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