The hours following sunset on Dec. 25 offer a wealth of naked-eye astronomy targets that can put even the most glitzy Christmas lights to shame, especially when viewed from a dark sky location.

Imaging technology has transformed how we observe the universe—from mapping distant galaxies with radio telescope arrays to ...

While much of Perseverance's work focuses on ancient rocks that record Mars' long-lost rivers and lakes, megaripples offer a ...

Black holes are among the most extreme objects in the universe, and now scientists can model them more accurately than ever ...