The newly discovered interstellar visitor is just the third of its kind and fascinates astronomers who hope to learn from it ...

Each month, a full moon lights up the night sky—but this July brings a special sight for stargazers. The full Buck Moon will share the spotlight with Mars and Saturn, creating a beautiful display and ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth — but closer to the red planet than us at a safe 150 million miles away.

Voyager 1 and 2 have traveled farther than any human-made object—well beyond the planets and into interstellar space. But ...

Astronomers have discovered a new interstellar comet passing through our solar system, marking the third interstellar object we've discovered.