Astronomers are making significant strides in detecting an ancient signal from one of the universe’s most unexplored periods.

Before the cosmos lit up with stars and galaxies, the universe passed through a dark, silent era. But new findings suggest ...

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

UChicago-led study analyzes massive galaxy clusters mapped by the Dark Energy Survey, offers new way to probe cosmic laws ...

Using a global network of telescopes, astronomers have detected the lowest-mass dark object yet found in the universe.

A recent detection from JWST is being widely discussed. The discoverers suggest that it might be an incredible record-breaker ...

On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...

According to NASA, we don’t know what dark energy actually is – but we know it exists. Tides aims to better understand this phenemenon.

Astronomy is, in essence, an exercise in inference. We cannot touch the stars, nor scoop up galaxies in a lab. Instead, we ...

Understanding how the universe transitioned from darkness to light with the formation of the first stars and galaxies is a key turning point in the universe’s development, known as the Cosmic Dawn.

Astronomers have detected one of the darkest objects ever seen at a record cosmic distance—only with the assistance of ...

Calculating the total mass of the universe is not simple, because most of the mass is invisible. In a pie chart of the contents of the universe, only 5 percent is normal matter, atoms that make up all ...