Here is a look at just a few of the biggest developments in astronomy that The Debrief has been tracking in 2025.

Earth's changing spin is threatening to toy with our sense of time, clocks and computerized society in an unprecedented way — but only for a second. For the first time in history, world timekeepers ...

The Prague Astronomical Clock, or Orloj, shows time in several ways, including medieval and modern systems. Figures of the Apostles appear hourly in a moving display. The clock face tracks the ...

The leap second – units of time added to the atomic clock every few years to remain synchronised with astronomical time – should be replaced with a leap minute added far less frequently, a leading ...

WASHINGTON — Earth’s changing spin is threatening to toy with our sense of time, clocks and computerized society in an unprecedented way — but only for a second. For the first time in history, world ...

Earth’s changing spin is threatening to toy with our sense of time, clocks and computerized society in an unprecedented way — but only for a second. For the first time in history, world timekeepers ...

What time is it? A glimpse at your phone or computer will likely reveal a pretty accurate answer. But though time seems constant, we’ve actually been adjusting it for decades—in the form of a leap ...

A top scientist has proposed a new way to reconcile the two different ways that our clocks keep time. Meet — wait for it — the leap minute. By Matt Richtel Later this month, delegations from around ...