More women are learning about their breast density when they receive their mammogram results. But what happens next?

In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

If you look across space with a telescope, you'll see countless galaxies, most of which host large central black holes, ...

Most of the universe is made up of dark matter and dark energy. The majority of everything else is dispersed throughout space ...

Knotted structures once imagined by Lord Kelvin may actually have shaped the universe’s earliest moments, according to new ...