It is widely accepted that the universe is expanding at an accelerating rate, but now researchers say our measurements of the ...

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously ...

The Big Bang theory has dominated our understanding of the universe’s origin for almost 100 years. It describes a moment when ...

The popular consensus among scientists is that the universe will continue expanding until the bitter end. A team of ...

Learn what a black hole is, how it forms, and how astronomers detect it. Understand the science behind black holes and their ...

Doesn’t seem like much of a brainteaser, does it? Everyone knows the sky darkens at night because the sun sets … or more accurately, because our part of planet Earth rotates away from the sun, and ...

Is the universe infinite, Aristotle asked in 350 BCE, “or is this an impossibility? The decision … is … all-important to our search for the truth.” The Greek ...

In the words of Dr. Lawrence M. Krauss, space and time cannot contain the fundamental laws of physics because they generate ...

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

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. About a century ago, scientists were struggling to ...