If another gravity theory is correct, "then the broader implications are enormous," astrophysicist Stacy McGaugh told ...

Dark matter is an essential element of galaxy formation and physics, according to the standard theory of how the universe ...

Gravitational distortions produced by distant galaxies show a slight—but notable—disagreement with Einstein's predictions.

The origins of life in the universe have been a topic of scientific inquiry for centuries. Despite significant progress in ...

The standard model for how galaxies formed in the early universe predicted that the James Webb Space Telescope (JWST) would see dim signals from small, primitive galaxies. But data are not confirming ...

The standard model for how galaxies formed in the early universe predicted that the James Webb Space Telescope (JWST) would ...

Why is the expansion of our Universe accelerating? Twenty-five years after its discovery, this phenomenon remains one of the greatest scientific mysteries. Solving it involves testing the fundamental ...

The Big Bang theory suggests that the universe began as a hot, dense point, expanding into the cosmos we observe today.

These are big, literally cosmic questions, and astronomers continue to struggle to nail down the answers. Different ...

Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales. Likewise, ...

For a long time, scientists have believed in the inflationary universe theory which states that almost 14 billion years ago, ...