A newly detected gravitational wave, GW250114, is giving scientists their clearest look yet at a black hole collision—and a powerful way to test Einstein’s theory of gravity. Its clarity allowed ...

This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of stars are equally common. Physicists can now explain the dearth.

For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational ...

Time is a straightforward concept - or is it? The passing of minutes and years isn't as easy to explain as many assume.

To most of us, time feels as solid as the phone alarm that drags us out of bed or the calendar that fills up faster than we ...

Vladimir Fock occupies a distinctive place in the history of twentieth-century science, not only for his profound ...

“General Hospital” will pay tribute to the late Anthony Geary by re-airing his 2015 farewell episode on Jan. 1. Geary, who played Luke Spencer on the ABC soap for nearly 40 years, died on Dec. 14 due ...

MOSCOW, Dec 22 (Reuters) - A Russian general was killed by a car bomb in southern Moscow on Monday, Russian investigators said, adding that they suspected Ukrainian special services could have been ...

The attack appeared to be the latest targeted assassination of a senior military official inside Russia’s borders. By Ivan Nechepurenko A senior Russian general was killed on Monday in Moscow after a ...