This idea is called the big bang model—which is an unfortunate name because it brings to mind a cosmos expanding like an ...

Astronomers have produced the most detailed map yet of dark matter, revealing the invisible framework that shaped the Universe long before stars and galaxies formed. Using powerful new observations ...

Here’s what you’ll learn when you read this story: A new paper adjusts an equation that defines our universe in response to recent new data. The cosmological constant, which describes how our universe ...

Depending on how you look at it, the universe might not have an "end," after all. This article was originally published at The Conversation. The publication contributed the article to Space.com's ...

Calculating the total mass of the universe is not simple, because most of the mass is invisible. In a pie chart of the contents of the universe, only 5 percent is normal matter, atoms that make up all ...

Everything humanity has ever touched, measured, or imagined as “normal” matter is a tiny sliver of reality. Less than 5 percent of the known cosmos is made of the atoms that build stars, smartphones, ...

For decades, philosophers and physicists alike have speculated that our entire existence might be nothing more than an advanced simulation. But new research from the University of British Columbia ...