改进后的未来时钟准确度将提高到320亿年一秒的误差——高出宇宙年龄的两倍多。

Future clocks that use the new improvements would be accurate to a second every 32 billion years — more than twice the age of the universe.

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GPS接收机的校正可以对这方面的误差做出解释，但尽管如此，GPS时钟信号只能保证准确度为100纳秒的级别。

GPS receivers make corrections to account for this, but nonetheless the clock signals are only guaranteed to be correct on the order of 100 nanoseconds.

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然而卡洛·康泰迪说，用GPS人造卫星来同步时钟，远远达不到这个准确度，这是因为GPS人造卫星的信号本身也受到重力时间膨胀效应的影响。

But Contaldi says that GPS synchronization is not nearly that accurate, because GPS satellite signals are themselves subject to gravitational time dilation.

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