Dark matter has baffled physicists for nearly a century, quietly shaping our universe's unseen framework. Invisible yet ...

How The Big Bang Theory showrunners tricked fans by casting a real-life and hilarious astronaut in the sitcom.

University of Arizona researchers are among a group of scientists who hope to discover what happened immediately after the Big Bang, when the universe expanded in a fraction of a ...

It's well known that the universe began in an explosion known as the Big Bang, but scientists now say that it might end with ...

If our 13.8 billion-year-old cosmos could be considered middle-aged, researchers note these new images captured around its ...

Scientists using two enormous telescopes — one on Earth and the other in space — have detected oxygen in the most ancient known galaxy, a star-scape beaming light just 300 million years after the Big ...

The universe has been expanding ever since the Big Bang almost 14 billion years ago, and astronomers believe a kind of invisible force called dark energy is making it accelerate faster.

The discovery of Dark Energy in 1998 was a shock. Before then, scientists believed the Universe’s expansion, triggered by the Big Bang, would gradually slow due to gravity. Instead, astronomers found ...

New data further challenge the best scientific theory of the history and the structure of the universe. But a separate recent ...

The mysterious force called Dark Energy, which drives the expansion of the Universe, might be changing in a way that ...

Known as the cosmic microwave background, the microwaves are a relic from a time when the universe was first cooling down ...

Famed physicist Stephen Hawking took gravity to its ultimate limits. In doing so, he made a number of significant ...