Explore the universe from the tiniest Planck lengths to the largest blue whales, and discover quirky measurements like smoots ...

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 universe is truly magical: vast, mysterious, and endlessly fascinating. There’s something almost unreal about being able to see photos captured from the depths of space, where time and distance ...

Let’s reimagine the walk of all walks—not just a meander through the neighborhood or even a trek spanning continents, but an epic journey to the very edge of the universe. It’s a quest so vast, so ...

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...

The universe is a strange place on very small scales. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. What makes up the matter we perceive in the ...

There are plenty of awesome objects in the universe, made more marvelous by scientists’ ability to image and understand the laws and processes that make them possible. Each year, researchers make new ...

Are we alone? It's one of the most basic questions of human existence. People have been trying to answer it for millennia in one form or another, but only recently have we gained the tools and ...