Ever since humans first gazed up at the night sky, the Universe has filled us with awe and wonder. Lately, however, it's also ...

A newly-detected spinning galaxy filament is reshaping our understanding of cosmic structure, gas flows, and the origins of ...

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

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 ...

In the end, the Universe becomes a place where gravity and quantum physics slowly turn all mass into faint streams of particles.

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

Look into the night sky, and it might seem like space is a vast expanse of darkness. But are any regions darker than others? What's the darkest place in the solar system and, on a grander scale, the ...

How the universe got its large magnetic fields has remained one of the stickiest outstanding problems in astrophysics. Now, researchers have proposed a novel solution: a giant "dust battery" operating ...

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 ...