Age of the universe

The Oldest Stars Help Tell us how big the Universe is

Astronomers are struggling to understand the discrepancies when measuring the expansion rate of the universe with different methods, and are…

9 months ago

NGC 2419: Wayward Globular or the Milky Way’s Own?

Turns out, we may not know our extragalactic neighbors as well as we thought. One of the promises held forth…

6 years ago

Nearby Ancient Star is Almost as Old as the Universe

A metal-poor star located merely 190 light-years from the Sun is 14.46+-0.80 billion years old, which implies that the starĀ is…

9 years ago