Gravity
Relativity
Paradox
Time traveller
Time Machine
Wormhole
a hypothetical connection between widely separated regions of space–time.
Either of two theories of physics giving the relationship between space, time, and energy, especially for two objects moving in different ways
a statement or proposition which, despite sound (or apparently sound) reasoning from acceptable premises, leads to a conclusion that seems logically unacceptable or self-contradictory.
Travel through time into the past or the future.
Someone who can move between different times in the past or the future
The force that attracts objects towards one another, especially the force that makes things fall to the ground
