The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've ...

This article, originally titled "The Man Who Discovered the Universe," is from the Summer 2025 issue of Air & Space Quarterly ...

Biggest vs smallest - how do we measure up in the grand scheme of the universe? Explore the fascinating scales of existence, from quantum particles to the observable universe’s edge. A journey into ...

What is the meaning of life? Even the best of us couldn't hope to answer that question in a Universe Today article. But there ...

A giant supermassive black hole (SMBH) that consumes the mass of the Sun a day has been found to be about one-fifteenth of ...

Since 2020, Arizona has attracted more than $205 billion in semiconductor investment—more than any other state.

In the 30 years since the discovery of 51 Pegasi b, more than 6,000 planets outside our Solar System have been catalogued. Two modern-day explorers explain how.

Pfalzner's models show that interstellar objects — bodies ejected from other star systems — could be captured by these planet ...

LIGO observatory near Richland confirmed Einstein’s theory of relativity, it also has proven one of Hawking’s theorems.