Inside a black hole
The boundary of no return
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The descent into extreme gravity
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The heart of the mystery
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The final fade and cosmic legacy
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YOUR GOAL
Master of Inside a black hole
Black hole size: If our Earth collapsed into a black hole, it would shrink to the size of a single glass marble.
A theoretical limit around a black hole beyond which no light or radiation can escape. In 1916, Karl Schwarzschild first calculated this gravitational threshold using Albert Einstein's equations of general relativity.
What is the maximum mass limit of a stable white dwarf star, calculated by Subrahmanyan Chandrasekhar in 1930?
What is the boundary around a black hole beyond which nothing, not even light, can escape?
Why does the light from an object falling into a black hole shift toward the infrared spectrum?
In 2019, which global telescope network captured the first-ever image of a black hole's shadow?
Which German physicist first calculated the size of a non-rotating black hole's boundary in 1916?
To a distant observer, what happens to the clock of an astronaut falling toward a black hole?
What is the name of the supermassive black hole photographed in 2019 in the galaxy M87?
What is the speed of light, which represents the cosmic speed limit that gravity overcomes inside a black hole?
