In reality, time is a dimension a space that objects in the cosmos can move through and occupy. Objects can move across time in the same way as they can move up, down, forward, backward, or side to side in the universe. However, unlike the three spatial dimensions, the many objects in our universe only move through time in a limited number of directions. It is true mathematically that matter, such as galaxies, stars, planets, and people, only advance through time. Antimatter particles, on the other hand, can only travel backward in time, and energy particles, like photons, which have no mass, cannot travel forward in time.
Travel through space and time must be closely related in order to explain the outcomes of the Michelson-Morley experiment, as first realized by the famous German-American scientist Albert Einstein (1879–1955). His special theory of relativity, which was published in 1905, demonstrated that an object moves across space and time at different speeds. To describe the form and structure of the universe, according to Einstein, there must be a very strong connection between space and time. However, he lacked the mathematical knowledge necessary to demonstrate how the connection might operate.
Quantum mechanics is the scientific theory that describes how matter and energy function, much as general relativity is the scientific theory that explains how space and time function. Between mechanics and relativity, there are numerous important relationships. One such relationship is the one between matter and energy. Additionally, as matter is what produces gravity, it may be claimed that "matter teaches spacetime how to curve, and spacetime tells matter how to move," in the words of American physicist John Archibald Wheeler (1911). General relativity and quantum mechanics are two of the most influential theories in science, but their descriptions of many parts of the cosmos hardly ever connect or overlap.
It is conceivable for someone to move through time more slowly than other people. Time will pass more slowly if you are moving quicker than other people (for example, in a bus or airplane) than it would if you were just standing still. However, the change in these situations will be negligibly minor. Even if one spends twelve hours in a jet plane, the overall time difference from staying on the ground is less than one ten-millionth of a second. Half the speed of light, or an astonishing 335 million miles per hour, will cause a traveler to experience an elapsed time of 10 hours and 24 minutes for every 12 hours spent stationary.
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