What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy ...

The Hubble Space Telescope, a cornerstone of modern astronomy, has been providing breathtaking images and invaluable data for ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

The team explores one of the greatest discoveries of modern astronomy - that our universe is expanding - and the new ...

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

Space. It's really, really big. How big is it? Well, according to astronomers, the observable universe is around 92 billion light-years in diameter, but that's all we can see (hence the word ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

Astronomy is, in essence, an exercise in inference. We cannot touch the stars, nor scoop up galaxies in a lab. Instead, we ...

The first stars in the universe formed out of pristine hydrogen and helium clouds, in the first few hundred million years ...