New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...

For much of the twentieth century, scientists expected the expanding universe to slow over time. The opposite turned out to ...

For over two decades, cosmologists have believed that the universe is expanding at an accelerating pace, driven by a ...

Astronomers are closing in on a result so statistically secure that, in their language, it borders on certainty: a 99.9999999 ...

A team of astronomers using a variety of ground and space-based telescopes including the W. M. Keck Observatory on Maunakea, ...

It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, ...

A new set of precision distance measurements made with an international collection of radio telescopes have greatly increased the likelihood that theorists need to revise the “standard model” that ...

If you were to go as far out into space as you can imagine, what would you encounter? Would there be a limit to how far you could go, or could you travel a limitless distance? Would you eventually ...

A cosmic measurement technique independent of all others adds strong evidence pointing to a problem with the current theoretical model describing the composition and evolution of the Universe. A new ...