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 ...

The true “informational age” of the cosmos may be 62 billion years, not just the 13.8 billion years of our current expansion.

We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if it's negative?

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

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