Atomic Clocks
What Time is it on the Moon? Lunar GPS Needs to Know
GPS is ubiquitous on Earth. It guides everything from precision surveying to aircraft navigation. To realize our vision of lunar…
This Alien Landscape is Actually a Microscopic View of an Atomic Clock
Navigation satellites couldn't accomplish anything without extremely accurate clocks. But a regular clock won't do. Only atomic clocks are accurate…
Cosmic Rays can Help Keep the World's Clocks in Sync
The world has a robust, accurate timekeeping system that regulates our clocks. Humanity uses it for everything we do, from…
Atomic Clocks Separated by Just a few Centimetres Measure Different Rates of Time. Just as Einstein Predicted
The connection between relativity and quantum mechanics has been a black box for the world of physics for decades. That…
Deep Space Atomic Clocks Will Help Spacecraft Answer, with Incredible Precision, if They’re There Yet
How do spacecraft know where they are? There's no GPS out there. Right now, it involves sending a signal to…
Elusive Dark Matter Could Be Detected with GPS Satellites
You know the old saying: "if you want to hide something, put it in plain sight?" Well, according to a…
What are You Doing With Your Added Leap Second Today?
Everyone loves a long weekend, this weekend will be officially one second longer than usual. An extra second, or "leap"…