Space and time are independent of each other.

Space and time are interconnected and form a four-dimensional continuum called spacetime.

Space and time are interchangeable and can be transformed into each other.

Space and time are separate entities that exist in parallel.

Isaac Newton

Albert Einstein

Stephen Hawking

Galileo Galilei

E=mc^2

F=ma

PV=nRT

hc=λ

Time dilation

Time compression

Time reversal

Time acceleration

A four-dimensional fabric that combines space and time into a single entity.

A three-dimensional grid of space.

A one-dimensional line of time.

A two-dimensional plane of space and time.

Gravity is a force that acts between objects with mass.

Gravity is a curvature of spacetime caused by the presence of mass and energy.

Gravity is a wave that propagates through space.

Gravity is a particle that interacts with other particles.

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

The center of a black hole where all matter is concentrated.

The region outside a black hole where its gravitational pull is strongest.

The point where a black hole forms from a collapsing star.

Hypothetical tunnels connecting different points in spacetime, allowing for faster-than-light travel.

Black holes that can transport objects to different parts of the universe.

Regions of spacetime where time flows backward.

Areas where the laws of physics break down.

The paradox that arises when a time traveler goes back in time and prevents their own birth.

The paradox that arises when a time traveler changes the past and creates a new timeline.

The paradox that arises when a time traveler meets their past self.

The paradox that arises when a time traveler travels to the future and sees their own death.

Paths in spacetime that allow for time travel to the past.

Paths in spacetime that allow for time travel to the future.

Paths in spacetime that allow for travel between different points in space without moving through time.

Paths in spacetime that allow for travel to parallel universes.

The principle that states that a time traveler cannot change the past.

The principle that states that a time traveler can change the past but cannot create a paradox.

The principle that states that a time traveler can create a paradox but cannot change the past.

The principle that states that a time traveler can change the past and create a paradox.

Hypothetical particles that travel faster than the speed of light.

Hypothetical particles that travel backward in time.

Hypothetical particles that can exist in multiple timelines simultaneously.

Hypothetical particles that can communicate with other particles across vast distances.

Closed loops in spacetime where events repeat themselves indefinitely.

Paths in spacetime that allow for travel between different points in time without moving through space.

Regions of spacetime where time flows backward.

Areas where the laws of physics break down.

The idea that the laws of physics prevent time travel to the past.

The idea that time travelers cannot change the past.

The idea that time travelers can change the past but cannot create a paradox.

The idea that time travelers can create a paradox but cannot change the past.