A new high-resolution map of distant galaxies may help scientists understand the mysterious dark matter holding the universe ...

Hypervelocity stars have, since the 1920s, been an important tool that allows astronomers to study the properties of the Milky Way galaxy, such as its gravitational potential and the distribution of ...

Astronomers have chased hypervelocity stars for more than a century. These rare objects move so fast that the Milky Way cannot keep them. When a star exceeds the galaxy’s escape speed, it becomes ...

A new study published in Science marks the first time astronomers have directly measured the mass of a rogue planet, a free-floating world not bound to any star, revealing critical insights into these ...