GENEVA, Switzerland — For over two decades, astronomers have been puzzled by the mysterious “dark energy” driving the ...

Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales. Likewise, ...

Hollywood has made a cottage industry out of imagining biological space aliens, but if intelligent life is out there it’s ...

The universe may hold more secrets than we ever imagined. Starting with the Big Bang, the cosmos has been expanding and ...

Earth is the only known place where humanity exists — where humanity can exist. It is the only known place where laughter, ...

A radical hypothesis suggesting black holes could be behind the accelerating expansion of our universe has been stirring up ...

Written by the former chief historian of NASA, the book examines the evolution of our cosmic understanding—from early civilizations to the present day ...

"Just as the cosmos lights up our universe with endless wonder, Diwali illuminates our homes and hearts. In this image, ...

The Department of Astronomy is a step closer to mapping the final frontiers of space with a research center, which announced ...

Supermassive black holes exist at the center of most galaxies, and modern telescopes continue to observe them at surprisingly ...

Understanding how these black holes managed to grow so rapidly in the early universe has posed significant challenges.

Carl Sagan had a gift for translating complex scientific ideas into stories that sparked wonder and inspired generations, ...