The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, ...

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

Will the universe keep existing forever? An astrophysicist explains how scientists aren’t entirely sure, but they can make ...

“The cosmos is also within us, we're made of star-stuff. We are a way for the cosmos to know itself.” - Carl Sagan Compared to the Sun, how big is the Earth? What is a scale model and how does it help ...

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 ...

This story is part of our Cosmic Perspective series, in which we confront the staggering vastness of the cosmos and our place in it. Read the rest of the series here. In a sense, we are at the centre ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

A controversial new theory about how the universe began rejects the widely-held belief that it started with a giant cosmic eruption known as the Big Bang. One scientist suggests that the cosmos grew ...

While it's much smaller than the largest supermassive black holes detected, it's still a whopper considering how early in the history of the universe it appeared. An enormous black hole in the early ...

Dark matter, the mysterious substance that makes up roughly 80 percent of all the matter in the universe, may have been forged before our cosmos was even born. Scientists have long theorized as to ...