Our own galaxy, the Milky Way, is thought to host between 100 and 400 billion stars, but there's no way to know the exact figure. Likewise, there's no way to know for sure how many star systems ...

Our galaxy will make for a particularly splendid sight on the dark nights surrounding the new moon phase on Aug. 23.

NASA’s Hubble Space Telescope has snapped images of a recently discovered interstellar visitor hurtling through our solar ...

Astronomers have discovered a rare solar system with six planets moving in sync with one another. Estimated to be billions of years old, the formation 100 light-years away may help unravel some ...

When people picture space, they often imagine endless black emptiness dotted with planets and stars. But new research shows ...

One Sagittarius A* sits at the center of our galaxy, the Milky Way. In fact, according to NASA most galaxies of a similar size have monster black holes at their center.