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

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of ...

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

If recent discoveries that dark energy is evolving hold any water, our Universe will collapse under its own gravity on a ...

The universe is truly magical: vast, mysterious, and endlessly fascinating. There’s something almost unreal about being able ...

When discussing the scale of the universe, we’re immediately faced with an intriguing question: are we tiny beings, or is the ...

Even before the first stars lit up the Universe, the Cosmos was not the cold place most researchers once imagined. New ...

Modern cosmology reveals a universe expanding uniformly without a spatial center or edge. The Big Bang wasn't a localized explosion but a simultaneous ...

Learn how many stars there are in the Milky Way, and how astronomers count them.

Pulsars could be helping scientists distinguish between gravitational waves caused by supermassive black hole collisions and ...

Did stars and galaxies give rise to black holes, or was it the other way around? New research may challenge ideas about how the first celestial objects formed.

Not all stars are created equally. Astronomers believe that the first stars to form after the Big Bang were mostly made of ...