A region of spacetime where gravity is so strong that nothing, not even light, can escape.

A region of spacetime where gravity is so weak that nothing, not even light, can escape.

A region of spacetime where gravity is so strong that everything, even light, can escape.

A region of spacetime where gravity is so weak that everything, even light, can escape.

The boundary beyond which nothing, not even light, can escape from a black hole.

The boundary beyond which everything, even light, can escape from a black hole.

The boundary beyond which nothing, not even light, can enter a black hole.

The boundary beyond which everything, even light, can enter a black hole.

The point at the center of a black hole where all of the mass of the black hole is concentrated.

The point at the center of a black hole where all of the energy of the black hole is concentrated.

The point at the center of a black hole where all of the momentum of the black hole is concentrated.

The point at the center of a black hole where all of the angular momentum of the black hole is concentrated.

A diagram that represents the spacetime of a black hole.

A diagram that represents the event horizon of a black hole.

A diagram that represents the singularity of a black hole.

A diagram that represents the escape velocity from a black hole.

The set of all possible paths that particles can take through spacetime.

The set of all possible paths that light can take through spacetime.

The set of all possible paths that information can take through spacetime.

The set of all possible paths that energy can take through spacetime.

The event horizon is the boundary beyond which nothing, not even light, can escape from a black hole, while the singularity is the point at the center of a black hole where all of the mass of the black hole is concentrated.

The event horizon is the boundary beyond which everything, even light, can escape from a black hole, while the singularity is the point at the center of a black hole where all of the energy of the black hole is concentrated.

The event horizon is the boundary beyond which nothing, not even light, can enter a black hole, while the singularity is the point at the center of a black hole where all of the momentum of the black hole is concentrated.

The event horizon is the boundary beyond which everything, even light, can enter a black hole, while the singularity is the point at the center of a black hole where all of the angular momentum of the black hole is concentrated.

The Penrose diagram is a two-dimensional diagram that shows the causal structure of spacetime.

The Penrose diagram is a three-dimensional diagram that shows the causal structure of spacetime.

The Penrose diagram is a four-dimensional diagram that shows the causal structure of spacetime.

The Penrose diagram is a five-dimensional diagram that shows the causal structure of spacetime.

It allows us to visualize the spacetime of a black hole.

It allows us to understand the causal structure of spacetime.

It allows us to calculate the escape velocity from a black hole.

It allows us to determine the mass of a black hole.

It is only valid for black holes that are not rotating.

It is only valid for black holes that are not charged.

It is only valid for black holes that are not in a gravitational field.

It is only valid for black holes that are not in a magnetic field.

It can be used to study the properties of black holes.

It can be used to understand the causal structure of spacetime.

It can be used to calculate the escape velocity from a black hole.

It can be used to determine the mass of a black hole.

The Penrose diagram is a two-dimensional representation of the Schwarzschild metric.

The Schwarzschild metric is a three-dimensional representation of the Penrose diagram.

The Penrose diagram is a four-dimensional representation of the Schwarzschild metric.

The Schwarzschild metric is a five-dimensional representation of the Penrose diagram.

The Penrose diagram is a two-dimensional representation of the Kerr metric.

The Kerr metric is a three-dimensional representation of the Penrose diagram.

The Penrose diagram is a four-dimensional representation of the Kerr metric.

The Kerr metric is a five-dimensional representation of the Penrose diagram.

The Penrose diagram is a two-dimensional representation of the Reissner-Nordström metric.

The Reissner-Nordström metric is a three-dimensional representation of the Penrose diagram.

The Penrose diagram is a four-dimensional representation of the Reissner-Nordström metric.

The Reissner-Nordström metric is a five-dimensional representation of the Penrose diagram.

The Penrose diagram is a two-dimensional representation of the Kerr-Newman metric.

The Kerr-Newman metric is a three-dimensional representation of the Penrose diagram.

The Penrose diagram is a four-dimensional representation of the Kerr-Newman metric.

The Kerr-Newman metric is a five-dimensional representation of the Penrose diagram.