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The Kid Should See This

What’s inside a black hole?

Watch more with these video collections:

Why are black holes like vacuum cleaners? How do scientists detect black holes? Can we know what’s inside one? What if we fall in? And what’s an event horizon?

Travel to the edge of a black hole, where the laws of physics bend and time seems to stand still. There, an animated version of Royal Observatory Greenwich astronomer Elizabeth Roche investigates the complex interplay of gravity, spacetime, the fundamental laws of physics, and the mysteries of the cosmos.

black holes are like a vacuum
Specifically, “Liz would like to know what would happen to her if she approached one,” this Royal Observatory Greenwich animation explains, “and would particularly like to know what could be inside.”

“Near the boundary called the event horizon, she would feel the effects of the strong gravitational forces from this collapsed star. At the point of the event horizon, Liz would have to travel at the speed of light to escape the gravity of the black hole, and this is impossible for her or any object to achieve. “

trying to run faster than the speed of light

“Also, the strong gravitational field would slow down time. If we could see Liz’s watch from our perspective here on Earth, it would appear to us to tick a lot slower than our watches, although time for her would pass by normally.

“Eventually, after a few years set outside the event horizon of the black hole, Liz would be shocked to know that thousands of years may have passed back home on Earth. It’s as if the black hole is a time-traveling machine allowing Liz to travel into the future…”

the difference in time

“What would happen to Liz if she stepped in? Well, if she fell in feet first, her feet would be pulled further along than her head, so she would have to endure spaghettification.

“She would be ripped apart and pulled into the center, the singularity, an exotic region of zero volume and infinite gravity. Or is it? Liz wisely decides not to go in but thinks about the possibilities for what she would find…”

spaghettification
Watch more with the Royal Observatory Greenwich, and more black hole videos, including:
β€’Β The first image of a black hole: A three minute guide
β€’Β What are the largest black holes in the universe?
β€’Β This Is A Film About The James Webb Space Telescope

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