Posts claiming a celestial "smiley face” will light up the night sky over Christmas aren't true. But the Christmas Tree ...

The number of satellites in space continues to rise due to the deployment of megaconstellations. For decades, humanity has ...

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

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

Astronomers were busy in 2025, starting the year off by tracking an asteroid that put Earth on alert, followed by discoveries ...

I/ATLAS may have moved away from Earth as it makes its way out of the solar system, but this interstellar intruder continues ...

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

From an interstellar comet to breathtaking auroras and from brand-new rockets to iconic space telescopes, here are some of our favorite images from the cosmos in 2025 ...

Astronomers analyzing data from an array of telescopes — including the W. M. Keck Observatory atop Mauna Kea on the Big ...

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.

Ancient humans tracked stars to predict weather and harvest times. Babylonian astronomers used graphs to chart planet movements. Many star names and constellations originated in ancient Babylon.