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Physicists have made one of the highest performance atomic clocks ever. ­­ Their instrument, known as an optical lattice atomic clock, can measure differences in time to a precision equivalent to ...

The time is nigh for nuclear clocks. In a first, scientists have used a tabletop laser to bump an atomic nucleus into a higher energy state. It’s a feat that sets scientists on a path toward creating ...

Scientists are using atomic clocks to investigate some of the universe's greatest mysteries, including the nature of dark matter, in a laboratory. In the process, they say they're bringing cosmology ...

The internal structure of the thorium-229m nuclear state has been studied in detail for the first time by physicists in Germany. Thorium-229m is a metastable (or isomer) excited state of thorium-229 ...

The Nobel Prize in Physics was just awarded to American physicist David Wineland and French physicist Serge Haroche for work which lead to development of new quantum computers and ultra-precise atomic ...

For all our telescopes and colliders, dark matter has remained an elusive ghost for the better part of a century. It outweighs everything we see by a factor of five, yet it slips past every detector ...

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...

Two physicists just snagged $3 million for helping develop a super-precise clock that could allow scientists to study and explore the universe like never before. Hidetoshi Yatori and Jun Ye won the ...

Physicists have measured and compared the "ticking" rate between three of the most precise clocks in the world to such unprecedented accuracy that it may lay the groundwork to answer some of the ...

Picture a clock ticking so steadily that it doesn’t lose a second, even after running for 1 billion years. Scientists are now closer than ever to realizing that level of timekeeping precision, new ...