Three galaxies were found in the merger of a triple system, which was rare in itself, and might help observe hierarchical ...

Using Georgia State’s CHARA Array, an international team of scientists has uncovered unexpected complexity in how stars ...

New observations of a nearby red giant star suggest that a long-standing explanation for how giant stars spread life’s ...

A groundbreaking discovery published in Nature Astronomy has revealed a cosmic phenomenon that may finally settle a ...

Understanding how the Milky Way formed means looking far beyond the bright spiral you see in the night sky. A new study led ...

A mysterious force called Dark Energy might be changing, in a way that challenges our current understanding of the nature of ...

But the Big Bang theory predicts that about 5% of the universe's contents should be atoms made of protons, neutrons and ...

Scientists have discovered a giant cosmic filament where galaxies spin in sync with the structure that holds them together.

Animation of the findings by researchers who used time-delay cosmography to independently confirm that the universe’s current ...

Visitors to the Sunwheel can see the sun rising and setting over the winter solstice stones from approximately Dec. 16 through Dec. 26. During this period the sun appears to rise at a fixed spot on ...

The first pulsar was discovered in 1967 by Jocelyn Bell Burnell. Finding these mysterious signals forever changed astronomy.

Long before modern telescopes, early astronomers mapped the heavens with math, myth, and sheer curiosity. This crossword quiz celebrates the minds who first charted the cosmos.