Anatomy of Black Holes
The boundary around a black hole.
What is the event horizon?
Discovered the radiating evaporation of black holes
Who is Stephen Hawking?
The phenomenon when Johannes crosses the Event Horizon.
What is spaghettification?
To escape a black hole, you must travel faster than this fundamental constant of the universe.
What is the speed of light?
This is the theoretical object that is the opposite of a black hole.
What is a white hole?
The reason is that the accretion disk is brighter than the rest of the black hole.
What is friction and heating?
Eventually, a black hole eradiating energy, will shrink and do this.
What is evaporate?
If Johannes floats near the event horizon, his watch will appear to do this to an observer far away.
What is slow down?
The effect of gravity on light.
What is bending / what is gravitational lensing?
If a particle entered a white hole, this would happen.
What is becoming unstable / what is collapsing?
This is the area outside the event horizon where gravity is so strong that photons are forced to travel in circles.
What is the photon sphere?
The quantum physics behind Hawking radiation.
What are particle-antiparticle pairs forming near the event horizon?
As Johannes gets close to the inner edge of the accretion disk, he has to wear a lead-lined suit because the friction of the gas moving nearly at the speed of light is emitting energy radiation known as this.
What are X-rays?
The scientist who developed the theory of gravity curving spacetime.
Who is Albert Einstein?
This is the theory where a black hole is the entrance and a white hole is the exit.
What is a wormhole?
The reason we can't observe the singularity, even with perfect instruments.
What is the event horizon / what is gravity / what is nothing can escape a black hole?
The reason why Hawking radiation evaporates black holes.
What is absorbing antiparticles?
As Johannes falls into the black hole, an outside observer would see him do this.
What is slow down and fade to red?
The name of the theory that gravity curves spacetime.
What is the theory of general relativity?
This is the theory that yields the equations that allow white holes to exist.
What is general relativity?
In a rotating black hole, the singularity is predicted to take this shape instead of existing as a single point.
What is an infinitely thin ring, called a ringularity?
As a black hole loses mass through radiation, its temperature changes in this way.
What is increases?
If Johannes looks backwards while falling in, he sees the entire universe shrink into a tiny bright circle above his head, a phenomenon known as this.
What is the celestial sphere / what is a shrinking window?
The effect of time near a strong gravitational pull.
What is time slowing down?
This is a hypothetical object formed when a black hole and a white hole combine.
What is a gray hole?