A faint radio "whisper" from ancient hydrogen reveals the universe was heating up long before it filled with starlight.

The Hubble Space Telescope has glimpsed the most distant single star it's ever observed, glimmering 28 billion light-years away. And the star could be between 50 to 500 times more massive than our sun ...

A new space telescope will help scientists look back in time at the origin of our universe and the galaxies and planetary systems that have populated it ever since. The mission will further our ...

The early Universe still holds many mysteries, and the James Webb Space Telescope may have made a discovery that would ...

Japanese scientists simulated faint 21-centimeter radio waves from the Universe’s “Dark Ages,” offering a potential way to ...

The early universe was already warm before reionization, revealing that the first stars did not flicker on in an icy cosmos.

A mysterious object with a mass equivalent to 1 million suns has been detected in space, but its nature remains unknown.

Astronomers from the University of Southampton made the unexpected discovery while examining an infant galaxy 12 billion ...

Scientists have blown stargazers’ collective minds after discovering a massive dark object in space that’s completely ...

Astronomers say NASA’s James Webb Space Telescope may have spotted the universe’s first “dark stars,” primordial bodies of ...

Reionization is thought to have been driven by ultraviolet light produced by both early stars and active galactic nuclei ...