Some galaxies that should have ceased forming stars long ago are defying expectations. Anew theory proposes the existence of ...

Astronomer Charles Steinhardt said most stars we see "might have formed under different conditions than we previously ...

The most distant and earliest "dead" massive galaxy ever seen shows some galaxies lived fast and died young shortly after the ...

In the early Universe, a typical galaxy accretes gas from the surrounding intergalactic ... They appear red because they no longer contain young, bright blue stars — only older, smaller red stars ...

Over the past decade, scientists have detected a puzzling phenomenon: radio pulses coming from within our Milky Way galaxy that would pulse every two hours, like a cosmic heartbeat.