A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.

For spinning spheres, centrifugal force is maximized at the equator, where the rotational speed is highest. The amount of the ...

Infinity isn’t enough to describe the universe, according to cutting-edge science. This video unpacks the models that ...

An international team led by the University of Geneva (UNIGE) has identified three ultra-massive galaxies—nearly as massive ...

This isn’t how our universe works. Our observable universe, a sphere of radius about 46.5 billion light years (enlarged from ...

When we go backwards in time through the history of the cosmos, the distances and volumes shrink, while the average energy ...

Our knowledge of physics — gained through astrophysical experiments, or in laboratories via machines such as particle ...