
Spacetime
Spacetime is a mathematical model that combines three dimensions of space and one dimension of time into a single four-dimensional continuum. In the context of space and astronautical engineering, spacetime is used to describe the geometry of the universe and the motion of objects within it. The theory of general relativity, which describes the gravitational force as a curvature of spacetime, is a fundamental concept in this field. Spacetime is also used to describe the behavior of light and other electromagnetic radiation, as well as the propagation of gravitational waves. Understanding the properties of spacetime is essential for designing spacecraft trajectories, predicting the behavior of celestial bodies, and exploring the universe.
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