The optical lattice clock, which uses a laser to measure vibrating atoms, could offer a more accurate definition of the second.
The answer to this question may depend on whether Stephen Hawking was right in his theory that describes how black holes shed mass and eventually decay.
Modern science provides a humbling perspective. Our lives, indeed even that of the human species, are just a blip compared to the Earth, at 4.5 billion years and counting, and the universe, at 13.7 billion years.
It now appears the entire cosmos is living on borrowed time. It may be a blip within a much grander sweep of time. When, we now ask, will time end?
Before 1883, we didn’t have Eastern Time Zone, the Mountain Time Zone or any standardized system for keeping clocks synchronized across the United States. Every region, every city could set clocks however they wanted, and there were enormous variations. William Heuisler explains the history of time and how trains changed everything.