Astrophysics

A new breed of giants raises questions about how the biggest galaxies arise

New study explores how life on one exoplanet could spread to its neighbor

Astronauts already skip ahead in time, but the laws of physics seem to forbid going backward—or do they?

The Dark Energy Survey is examining distant galaxies to figure out why space is expanding at an ever faster pace

The invisible dark matter particles that dominate the universe may come in strange and varied forms

Is the big bang, and all that came from it, a holographic mirage from another dimension?

Newly discovered lobes stretch tens of thousands of light-years above and below the Milky Way's disk. Where did they come from?

Proof of parallel universes radically different from our own may still lie beyond the domain of science

Emerging evidence suggests that the first starlight to shine after the big bang’s flash came from distant suns that ranged from very large to incredibly huge

Dozens of particles from halfway across the universe have landed in the IceCube experiment. These messengers could help answer some long-standing cosmic conundrums