universe

University of Chicago astronomer Wendy Freedman tells us how she's searching for an answer to the Hubble tension — a discrepancy between measurements of our universe's expansion that could threaten the dominant model of how the universe has grown since the Big Bang.

Researchers recently detected an "ultra-high-energy" cosmic ray, which is the most powerful since the famous "Oh My God" particle was detected in 1991. They have no idea where it came from.

Our universe seems to be perfectly suited for life. But anyone who claims that's evidence of a multiverse is falling prey to a logical fallacy.

Contrary to conventional wisdom, a pair of black holes could exist in perfect pairs without leading to a cataclysmic merger, new research suggests. All it takes is a dose of cosmic expansion.

The "law of increasing functional information" says that complex systems in nature evolve to become more complex.

NASA's James Webb Space Telescope has spotted a distant supernova that appears three times in the same photo. The new observations could help solve one of the universe's biggest inconsistencies.

Black holes can swallow stars, planets and even merge with other black holes, but could a massive one swallow the entire universe?

From the Catholic priest who pioneered it, to how we can (almost) see it, here are 5 fascinating facts about the Big Bang.

Any object with mass distorts the space-time continuum, which we perceive as gravity pulling us "down" toward that object's center.

And for that matter, could our universe be inside a black hole?