Black holes capture the imagination of scientists and space enthusiasts because they represent the most extreme gravitational ...

This temporal lag is a direct consequence of Albert Einstein’s Theory of General Relativity. The rule is simple: the weaker ...

"A three-body problem is extremely complicated. Now we're dealing with four: the sun, Earth, the moon and Mars. The heavy ...

Einstein’s equations look simple on paper but when physicists follow them to their logical end, the universe becomes far ...

110 years ago today, Albert Einstein published his General Theory of Relativity, which redefined the relationship between matter and gravity. Suddenly, our mysterious universe made a little more sense ...

Tracking time is one of those things that seems easy, until you really start to get into the details of what time actually is. We define a second as 9,192,631,770 oscillations of a cesium atom.

On the afternoon of June 24, 1944, a messenger entered Maj. Gen. Ralph C. Smith's command post on Saipan and handed him a brief message. Smith read it, pocketed it, and continued to direct the battle ...

Military official sees Russian attack in 'realm of possible' Much of Russia's forces unaffected by Ukraine war, general says Moscow's nuclear threats part of 'war of intimidation' Russia rejects ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

Two recently observed black hole mergers, occurring just weeks apart in late 2024, have opened an extraordinary new window into the universe’s most extreme events. These collisions not only revealed ...

The U.S. stock market continues to absorb its knocks, whether geopolitical, credit-linked or trade-induced, and sits at record highs. Any dips continue to be bought as investors bet on lower interest ...