The Andromeda Galaxy, our Milky Way’s colossal neighbor, lies 2.5 million light-years away yet shines visibly in dark skies.

The solar system's journey through the galaxy is more complex than most imagine. While we often picture planets orbiting the ...

The JWST discovers the Zhúlóng spiral galaxy, as massive as the Milky Way, formed only a billion years after the Big Bang.

The only place that's likely to happen is at the very center of our galaxy. And, for a while, there was an excess of ...

Scientists discover 3I/ATLAS, a possible 7-billion-year-old comet from deep space. It may rewrite what we know about the ...

A surprising discovery at the heart of the Milky Way is forcing scientists to rethink how massive structures called Fermi ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

A newly discovered object from deep space may be the oldest comet ever observed—possibly more than 7 billion years old, and ...

Dark matter is one of nature's most confounding mysteries. It keeps particle physicists up at night and cosmologists glued to ...

New research suggests sub-stellar objects called dark dwarfs could glow forever on dark matter energy. Could they reveal ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen – possibly predating our solar system by more than three billion years, researchers say. The "water ...

In October 1604, astronomer and mathematician Johannes Kepler spotted a new star in the sky and began tracking it. Over the ...