Why Elon Musk’s million satellites could spell disaster

Elon Musk and his SpaceX team want to launch up to one million satellites. But as Earth’s orbit becomes increasingly crowded, what will Musk’s mega constellation do to our night sky?

Feb 23, 2026, updated Feb 23, 2026

Elon Musk and his SpaceX team want to launch up to one million satellites as part of a proposal to power massive data centres in space.

They pitch it as a clean, green alternative to regular data centres.

But as Earth’s orbit becomes increasingly crowded, what will Musk’s mega constellation do to our night sky? And could a crash between satellites set off a catastrophic chain reaction?

Today, Associate Professor of Astronomy Sam Lawler on the potential for disaster, the need for new space laws – and even the time a huge piece of space junk landed in her home town.

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