How did Albert Einstein revolutionize the theories of astronomy and physics?

Einstein posed simple questions that could have been asked centuries earlier. For example: “What do we mean when we say two events are simultaneous?” or “What happens when two objects approach each other at the speed of light?”

Paradoxes seemed to emerge everywhere if you could travel at the speed of light. By providing explanations for such paradoxes, Einstein unraveled the riddles of the Universe. He is noted chiefly for his General and Special Theories of ‘Relatively’ that hold that motion, time, distance, acceleration and gravitation are not absolute, but relative, to moving frames of reference.