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For 13.8 billion years, the Universe has been expanding. But that couldn't have been the case for an eternity, and science has proven it.

Dark matter has never been directly detected, but the astronomical evidence for its existence is overwhelming. Here's what to know.

We've long known we can't go back to infinite temperatures and densities. But the hottest part of the hot Big Bang remains a cosmic ...

Red dwarfs are the Universe's most common star type. Their flaring now makes potentially Earth-like worlds uninhabitable, but just you ...

Found by Hubble before JWST's launch, GNz7q looked like a mix of a galaxy and a quasar. Was it actually our first known "Little Red Dot"?

Observations with the Hubble space telescope helped cement dark energy and reveal the Hubble tension. How are these two things so ...

The whole isn't greater than the sum of its parts; that's a flaw in our thinking. Non-reductionism requires magic, not merely science.

Solar power has the disadvantage that there's no Sun at night. Satellite startup Reflect Orbital wants to change that, but at what cost?

Inflation's two main criticisms, that it can predict anything and that the "measure problem" remains unsolved, can't erase its successes.

The Orionids meteor shower peaks October 20th/21st here in 2025, coinciding with a new Moon. See the brightest shooting stars of the year!