One of the biggest challenges in modern physics is uniting quantum mechanics and general relativity. A new experiment may ...

If, like me, you can't go a day without making sure your watch is synced to the second, you'll be delighted to learn that a new atomic clock has broken the record with an accuracy of 5.5 x 10⁻¹⁹ – ...

Scientists propose using quantum-entangled clocks to test how gravity affects quantum mechanics in curved spacetime.

With decades of national security experience, Jill Hruby joins the Bulletin’s Science and Security Board—the group that sets the Doomsday Clock—to help confront today’s most urgent man-made threats.

Possibly originating with the English poet Geoffrey Chaucer's "time and tide wait for no man," the idea that time waits for ...

The record-breaking achievement could lead to practical, utility-scale quantum computers that are both smaller and faster.

A clock built by a team led by researchers at the National Institute of Standards and Technology (NIST) has been estimated to ...

Key TakeawaysScientists have used laser-excited thorium-229 to probe for ultralight dark matter, even without a fully built ...

Vietnam is taking drastic yet cautious steps in building a culture of nuclear safety and security, with the aim of having its first nuclear power plant operational by the end of 2030 and using this ...

The National Institute of Standards and Technology (NIST) has set a new record by developing the world's most accurate clock, an atomic device with 19 decimal places of precision.

Earth is spinning faster this summer, making the days marginally shorter and attracting the attention of scientists and ...

A test using atomic clocks will watch superpositions ride Earth’s curved space-time and see if Einstein can play nice with ...