The temperature difference is not subtle. One side of the Milky Way’s outer halo runs noticeably hotter than the other, a ...

A team of astronomers believe they may have found the most "pristine" star in the universe to date. According to the team, ...

These halos, crucial to understanding galaxy formation, were largely unknown until the Hobby-Eberly Telescope Dark Energy ...

Some of the young universe’s biggest structures were hiding in plain sight. Astronomers have now identified more than 33,000 ...

The newly identified star carries almost no heavy elements, making it a rare surviving relic from the universe’s earliest chapters.