Biggest vs smallest - how do we measure up in the grand scheme of the universe? Explore the fascinating scales of existence, from quantum particles to the observable universe’s edge. A journey into ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

The universe's expansion means its size is bigger than its age suggests. The universe's expansion doesn't have a speed limit like objects within it. Distant galaxies move away from us as space itself ...

The size of the universe depends on its shape, with possibilities ranging from finite and spherical to flat or even infinite.

"We thought they were basically all going to be fried because the entire universe turned into a vat of boiling oil." Astronomers have discovered a collection of tiny galaxies located roughly 3 million ...

Astronomers have discovered the oldest and most distant black hole — a behemoth that likely formed at the dawn of the universe, more than 13 billion years ago. The black hole lies at the center of a ...