Time feels familiar. It marks every moment of daily life, from the ticking of a wall clock to the changing numbers on a ...

Pictures of the components used in making an atomic clock. The ion trap (left image) holds the clock in place. The optical/laser apparatus (right images) measures the clock’s frequency. Fukuoka, Japan ...

(koto_feja/Getty Images) A breakthrough in chronometry decades in the making could redefine the limits of how we keep time.

In 1980, a Russian cosmonaut named Sergei Krikalev unknowingly became one of history's most famous time travelers. After ...

New research says time only exists where space is curved enough to support it, implying that our expanding universe is slowly ...

Imagine you're trying to keep time by listening to a room full of people clapping. If everyone claps randomly, it’s hard to tell the rhythm. But if they clap in sync, the beat becomes clear and steady ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

What does the passage of time look like for a truly quantum object? The world’s best clocks may soon be able to answer this question, testing how time can stretch and shift in the quantum realm and ...

A clock based on radioactive thorium atoms realises a long-held ambition, demonstrating a technology that could eventually ...

The white pickup truck pulls up to a decommissioned space observatory on top of Mount Blue Sky, one of Colorado’s famous “14ers,” mountains that reach more than 14,000 feet high. The scene is stark on ...