Billions of years ago, a young spiral galaxy began to grow in a crowded part of the universe. It pulled in gas and small ...

Scientists have discovered a galaxy as it was 13 billion years ago, 800 million years after the Big Bang. It contains possible evidence of the universe's first stars and is one of the most chemically ...

Earth watched on as a communications satellite deployed its big reflector more than 22,000 miles (35,400 kilometers) away.

Astronomers led by the Center for Astrophysics | Harvard & Smithsonian (CfA) have made the first direct detection of ...