A research team at VTT MIKES has set a new record in optical-clock absolute frequency measurements using a strontium ...

Nuclear clocks are a technology researchers have been working toward for decades. New research in theoretical physics brings them closer to reality.

Scientists built a tiny clock from single-electron jumps to probe the true energy cost of quantum timekeeping. They discovered that reading the clock’s output requires vastly more energy than the ...

When daylight saving time ends on Sunday, and mornings are gradually growing darker. Whether you’re after a gentle sunrise glow or a good old-fashioned buzzer that could wake the neighbors, we’ve ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Picture a clock ...