How big is the Universe? Is it finite or infinite? These questions have puzzled astronomers, scientists, and curious minds ...

For centuries, we’ve looked up at the stars and wondered if the universe is infinite. We know there is a visible boundary of what we can observe, defined by how far light has traveled since the Big ...

A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have formed ...

Scientists say the Universe has no edge, but that doesn't mean it's infinite. A Manchester astrophysicist explains what we ...

Think of a mystery musical instrument. If a physicist is told the loudness of the sound it makes at every possible frequency, ...

If you wait even longer, eventually the stars will all burn out – stars like the sun last only about 10 billion years.

However, the observable universe extends farther than 13.8 billion light-years in every direction because, for all the time space has existed, it’s also been expanding.

James Webb telescope unveils largest-ever map of the universe The universe is 13.8 billion years old, but the observable universe stretches more than 13.8 light-years in every direction.

A controversial theory suggests the observable universe is the result of matter rebounding after the collapse of a black hole in another parent universe.

"We've measured more precisely that the observable Universe extends almost 50 billion light-years in all directions from us," says cosmologist Erminia Calabrese of the University of Cardiff in the ...

The spins of some early galaxies could be a clue that the entire observable universe exists within a black hole—except, that is, for all the evidence to the contrary ...

And when it comes to studying suitably large patches of the universe, cosmologists are very limited indeed: the observable universe is only so big.