Einstein’s theory of relativity turns 100 years old this week. Due to time dilation, how much time has passed elsewhere in the solar system?
Short answer: Almost exactly 100 years, give or take a few seconds. Long answer: On November 25, 1915 Einstein presented the final form his field equations to Royal Prussian Academy of Sciences, introducing general relativity to the world.  Among other weird consequences, Einstein’s theory of relativity says that time does not pass at the