It's a consequence of relativity called time dilation In effect It means the astronauts have jumped About 10 months into the future One of the distinctive things about time is that It has a direction From past to future From past to future A cup of hot coffee left at room temperature Always cools down It never heats up Always cools down It never heats up From past to future From past to future A cup of hot coffee left at room temperature Always cools down It never heats up It's a consequence of relativity called time dilation And in effect It means the astronauts have jumped About 10 months into the future It turns out that Entropy is the only thing that Makes a distinction between Past and future