Astrophysicist WARNS: "You're Not Prepared For This"

A single fleck of paint in orbit carries the destructive power of a rifle bullet. At 17,500 miles per hour, even the smallest piece of debris can destroy a satellite, which shatters into ten more pieces, each traveling at the same speed, each capable of destroying another satellite. Neil deGrasse Tyson explains how one collision could trigger a chain reaction that takes out the infrastructure that powers GPS, Uber, military communications, and internet access for billions of people.

He starts with what sits in the centre of every galaxy: a supermassive black hole. He walks through the physics of what happens if you fall into one. The difference in gravity between your head and your feet increases as you descend. These tidal forces stretch you until you snap at the base of your spine, then each half snaps again, bifurcating all the way down. Simultaneously, you are being extruded through the narrowing fabric of space "like toothpaste through a tube." But before that, something remarkable happens: a whole new space time opens up inside the black hole. Time dilates, meaning you watch the entire future history of the universe unfold as you fall.

Discover:

• Why a fleck of paint in orbit carries the destructive power of a rifle bullet

• What happens to your body inside a black hole (spaghettification explained)

• How a whole new space time opens up beyond the event horizon

• Why one satellite collision could trigger a chain reaction destroying thousands

• How 100,000 active satellites will be orbiting Earth by 2040

• Why four nations have already demonstrated the ability to destroy satellites

• The reason space law is still a "wild west" with no ownership rules

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