Space is the three-dimensional extent in which objects and events exist, and it is considered part of a four-dimensional continuum called spacetime. Spacetime combines space and time and is used to analyze events in a four-dimensional context.
Space is the boundless three-dimensional extent in which objects and events have relative position and direction. It is often conceived in three linear dimensions, but physicists consider it to be part of a four-dimensional continuum known as spacetime. Spacetime is the combination of space and time, with events analyzed in a four-dimensional context.
However, with the advent of Albert Einstein's theory of relativity, the concept of space expanded to include time as a fourth dimension, leading to our current understanding of the space-time continuum. This four-dimensional model is essential for explaining relativistic phenomena such as time dilation, length contraction, and the relative nature of simultaneity. The theory suggests that space and time are not independent entities but are interconnected and influenced by mass and energy, ultimately shaping the motion of celestial bodies and light.