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The Sombrero is the closest bright, massive, edge-on galaxy to us. JWST's new image, taken with MIRI, finally shows what's under its hat.

One of the fundamental constants of nature, the fine-structure constant, determines so much about our Universe. Here's why it matters.

Gravitational waves are the last signatures that are emitted by merging black holes. What happens when these two phenomena meet in space?

For nearly 60 years, the hot Big Bang has been accepted as the best story of our cosmic origin. Could the Steady-State theory be possible?

Two parts of our Universe that seem to be unavoidable are dark matter and dark energy. Could they really be two aspects of the same thing?

Scalars, vectors, and tensors come up all the time in physics. They're more than mathematical structures. They help describe the Universe.

Since the mid-1960s, the CMB has been identified with the Big Bang's leftover glow. Could any alternative explanations still work?

Our classical intuition is no good in a quantum Universe. To make sense of it, we need to learn, and apply, an entirely novel set of rules.

It's the ultimate setup for a Thanksgiving Day disaster. The physics of water and its solid, liquid, and gas phases compels us not to do ...

The most massive early galaxies grew up faster, and have more stars, than astronomers expected, according to JWST. What does it all mean?