space
time
1
the theory that adds the notion of time to that of a three-dimensional space
- According to Einstein's theory of general relativity, gravity is not just a force between masses but the curvature of space-time caused by those masses.
- The concept of space-time unifies the three dimensions of space with the fourth dimension of time into a single four-dimensional continuum.
- Black holes are regions of space-time where gravity is so intense that not even light can escape.
- In the early universe, space-time is thought to have been highly curved, leading to phenomena such as cosmic inflation.
- The study of space-time helps cosmologists understand the large-scale structure and evolution of the universe.
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