A record-breaking gravitational wave signal let scientists "listen" to a distant black hole merger and put Einstein's gravity to its toughest test yet.

The second reason is simple: location, location, location! The millisecond pulsar appears to be near Sagittarius A*, the ...

For those who watch gravitational waves roll in from the universe, GW250114 is a big one. It's the clearest gravitational wave signal from a binary black hole merger to date, and it gives researchers ...

In 1989, Gen. Xu Qinxian defied orders to crush the pro-democracy protests in Beijing. Now, leaked video from his court-martial is on YouTube. By Chris Buckley Reporting from Taipei, Taiwan When China ...

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 ...

Recent advancements in observational techniques have led to the capture of high-resolution images of black hole shadows, which are challenging the completeness of Einstein’s general theory of ...

It was on October 30 that an email went out to YouTube TV’s customers, which offered frustrated customers an explanation for why Disney-owned channels — which includes not only ABC but also ESPN, ...

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 ...

Planets that orbit white dwarf stars should be too hot to host alien life, theories suggest. But a new study accounting for Einstein's general relativity may rewrite that rule. When you purchase ...

Planets orbiting dead stars known as white dwarfs might be able to remain habitable thanks to general relativity subtly altering their motion. When stars like our sun run out of fuel, they expand and ...

AI tools now make summarizing YouTube videos effortless, helping you save hours of viewing time. From popular chatbots like ChatGPT, Gemini, and Perplexity to dedicated tools like Recall, Glarity, ...

Google's plan to remove Spanish-language network Univision from its core bundle of channels on YouTube TV at the end of this month is drawing pushback from a Republican attorney general in a ...