About 13.8 billion years ago, the origin of the universe began with the Big Bang. Scientists say all space, time, matter, and ...

Scientists have pulled off a feat long considered out of reach: getting light to mimic the famous quantum Hall effect. In ...

The oldest stars in the Milky Way are forcing a fresh look at one of cosmology’s biggest arguments. If some of them are about ...

Black holes that turn matter into energy could explain dark energy and answer two other cosmic questions. Now, the challenge ...

The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...