NEW YORK — Distant, ancient galaxies are giving scientists more hints that a mysterious force called dark energy may not be what they thought. Astronomers know that the universe is being pushed ...

The Dark Energy Spectroscopic Instrument uses a telescope in Tucson, Arizona, to create a map of the universe's ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. SpaceX on Tuesday launched another Starship rocket, but passed up catching the booster with giant mechanical arms as Donald ...

Our shared history can be told through the power of photography. Nat Geo's photo editors selected one image from each year of this century that capture the era's most important stories—from war ...

As of Nov. 12, the Prince and Princess of Wales, both 42, updated their profile pictures on the official royal X and Instagram accounts that they share, swapping out the Remembrance tribute to the ...

The Red Spider Nebula harbors one of the hottest stars known, which heats the gas around it to form shockwaves 62 billion miles (100 billion km) high. These waves form the spider-leg-like arcs in ...