Proliferation of rockets raises fears that the sky is falling

• 3 years ago
• Radio
• Duration 9:20

Recently the uncontrolled re-entry of a Chinese rocket booster closed airspace above Spain – and it wasn’t an isolated incident. The growing number of rocket launches around the world has increased the risk that eventually people will be killed or injured by re-entry debris. Bob talks to astronomer Aaron Boley about evaluating the danger, and strategies for reducing the risk.