Astrophysics

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

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

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

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

As you dig into those mashed potatoes, be grateful the universe’s physical constants are so precise that a slight variation in any one would render that drumstick—and even your existence—impossible

On the centennial of the theory of general relativity, senior Fermilab scientist Don Lincoln reflects on Einstein's quest to understand the quantum world

A dozen quasars in the early universe appear to have shut down in just a few years, baffling astronomers

Scientists photograph a gas-giant exoplanet forming around a young star that lies about 450 light-years from Earth

What we know about alien worlds—and what’s coming next

Astronomers get closer to an explanation for the unexpected abundance of gamma rays at the core of our galaxy

A new explanation for the strange grooves on the surface of the martian moon Phobos suggests that the entire satellite already shows signs of how it will eventually be destroyed.