What is Kessler Syndrome — and why do some scientists think the space age is nearing its end?

What is ‘Kessler Syndrome’ — and why do some scientists think the future of space exploration is threatened? It’s a chilling scenario: a runaway chain reaction of colliding space debris, creating a dense cloud that makes further space travel practically impossible. Imagine a cosmic traffic jam, but instead of cars, it’s defunct satellites, rocket stages, … Read more