Purdue and Chalmers researchers develop microcomb technology, miniaturizing optical atomic clocks for enhanced precision in ...

作为一种不发光，具有显著引力效应的“隐形”巨人，暗物质充斥于广袤的宇宙环境中，并成为宇宙学家所关注的热点；对于暗物质的实验探索，也一直是天体物理学的终极科学谜题。面对这样一种神秘却在宇宙之中普遍存在的物质，科学家对其的探索，犹如在黑暗森林中去捕获无形 ...

The Doomsday Clock now stands at 89 seconds to midnight, the closest to catastrophe in its nearly eight-decade history. Here's a look at how — and why — it's moved.

A microcomb chip to shrink optical atomic clocks . Traditional optical atomic clocks are not only big but complex, requiring ...

Atomic scientists moved their "Doomsday Clock" closer to midnight than ever before, citing Russian nuclear threats amid its invasion of Ukraine and other factors underlying the risks of global ...

New atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...

For the first time in three years, the Bulletin of the Atomic Scientists moved the Doomsday Clock forward by one second.

Scientists and global leaders revealed on Tuesday that the "Doomsday Clock" has been reset to the closest humanity has ever come to self-annihilation.

Daylight Saving Time will start on Sunday, March 9, this year, according to TimeAndDate.com. Clocks will “spring forward,” as ...

Optical atomic clocks can increase the precision of time and geographic position a thousandfold in our mobile phones, computers, and GPS systems. However, they are currently too large and complex to ...