This video walks you all the way to the last pages of reality, exploring what modern physics says about how the universe ...

Depending on how you look at it, the universe might not have an "end," after all. Whether the universe will "end" at all is ...

No one knows what kicked off the Big Bang that eventually allowed the stars to begin forming. Adolf Schaller for STScI, CC BY How can a Big Bang have been the start of the universe, since intense ...

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 ...

Knotted structures once imagined by Lord Kelvin may actually have shaped the universe’s earliest moments, according to new ...

It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, ...

The early universe experienced a phase of rapid expansion, known as inflation. For decades, cosmologists assumed that this expansion was powered by a new entity in the universe, known as the inflaton.

This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. CREDIT: ESA/Hubble & NASA, L. C. Ho, D. Thilker. Get the Popular Science daily ...

There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

If not in visible stars and galaxies, the most likely hiding place for the matter is in the dark space between galaxies.

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 ...