Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

The Case of the Missing Matter "We robustly show that the gas is much more extended than the dark matter" relative to ...

For decades, scientists have been puzzled by the missing mass in the universe. While we know that about 85% of the universe is made up of dark matter, the remaining 15% is made up of normal (baryonic) ...

Authorities released an investigation report detailing some of the last emails, phone calls and internet searches by Gene ...

China expressed openness to trade talks with the US, but under certain conditions. Beijing wants the Trump administration to ...

"The new model can account for both structure formation and stability, and the key observational properties of the expansion of the universe at large." ...

For 100 years, quantum theory has painted the subatomic world as strange beyond words. But bold new interpretations and experiments may help us to finally grasp its true meaning ...

It’s the cosmological equivalent of having slid between the cushions down the back of the couch; that is the place you should ...

Particle-accelerator study focuses on the r-process thought to be responsible for forming elements heavier than iron ...

The government will freeze $2 billion in funds because the university refused to comply with its demands. Harvard leaders believed saying no was worth the risk. 7 min read Trump Threatens Harvard ...

A U.S. judge on Tuesday demanded U.S. officials provide documents and answer questions under oath about what it had done to secure the return of a man wrongly deported to El Salvador, ramping up ...