Podbit · The Diary Of A CEO with Steven Bartlett
If enough satellites crowd low Earth orbit and one is destroyed, the resulting debris traveling at 17,000 mph will strike other satellites, each breaking into ten pieces, cascading in a chain reaction that could theoretically destroy 100% of all satellites within just a few orbits.
Where this was said
At 58:00 · chapter starts 53:54
The conversation shifts to the growing congestion in low Earth orbit. Steven Bartlett notes that roughly 5,000 new satellite objects were launched in 2025 alone, and Tyson confirms SpaceX's Starlink constellation reached 10,510 as of the mid-2026 recording. The economic justification is real — GPS underpins Uber's entire business model, and Starlink brings high-speed internet to remote regions — but the risks are mounting. [1] — Neil deGrasse Tyson "If enough satellites crowd low Earth orbit and one is destroyed, the resulting debris traveling at 17,000 mph will strike other satellites,…" 58:00 Tyson explains Kessler Syndrome, first described in 1978: past a critical density threshold, a single satellite collision creates debris traveling at 17,000 mph — far faster than a rifle bullet — which strikes other satellites, each breaking into ten pieces, cascading until 100% of satellites could be destroyed. Four nations (China, India, Russia, and the US) have already demonstrated anti-satellite weapons. The movie Gravity, Tyson notes, portrays exactly this scenario. The future of astronomy, he concludes, lies in space-based or lunar telescopes precisely to escape this problem.
As of mid-2026 recording, SpaceX's Starlink constellation alone has 10,510 satellites in orbit, with projections of 100,000 active satellites globally by 2040.
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