| UPDATED: 14:09, Thu, Jan 21, 2021
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It has been more than a century since Albert Einstein published his general theory of relativity to refine Isaac Newton’s law of universal gravitation. Providing a description of gravity as a geometric property of space and time, or spacetime, this model is still used by scientists today. Einstein’s theory has important astrophysical implications as it alludes to the existence of black holes – cosmic phenomena in which space and time are distorted in such a way that nothing, not even light, can escape.