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 ...

An artist's concept of multiple types of subatomic particles. Forget about turtles; for all practical purposes, it’s really particles all the way down. Consider the seemingly simple matter of their ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter.

Astronomers have made an exciting breakthrough in the search for the universe’s most mysterious substance—dark matter. They ...

There are several candidates for the biggest star in the universe. One of them, VY Canis Majoris, is over 1,500 times the width of the sun. If it were placed in our solar system, it would stretch to ...

New research suggests that there is a 90% chance that within the next decade, humanity could use a space or Earth-based ...