The universe follows predictable rules, behaving classically according to Einstein’s theory of general relativity. So, what ...

The Milky Way could have many more satellite galaxies than scientists have previously been able to predict or observe, ...

Did light shine in the universe’s earliest moments, or was it hidden from view? While this question may seem simple at first, arecent article by Live Sciencereveals that the reality is far more ...

Decades ago, astronomers estimated that “ordinary” matter (basically everything that isn’t dark matter or dark energy) makes ...

In a new photo book, The Universe in 100 Colors, science enthusiasts Tyler Thrasher and Terry Mudge take readers on a tour of color across scientific disciplines—from things most people will ...

For years, scientists have worked to chart the universe’s massive structure, aiming to test key models of cosmology. These ...

Nearly 50 years ago, physicists floated a bold idea: our universe might be stuck in a false vacuum. This state feels stable, ...

Uncredited. This image provided by NSF’s NOIRLab shows the trails of stars above Kitt Peak National Observatory, where a telescope is mapping the universe to study a mysterious force called dark ...

Our universe may have another mirror universe on the other side of the Big Bang running backwards in time, physicist hypothesize.

NEW YORK (AP) — Scientists are homing in on the nature of a mysterious force called dark energy, and nothing short of the fate of the universe hangs in the balance. The force is enormous — it ...