NASA is tracking a mysterious, fast-moving object entering our solar system, raising questions about whether it's just a ...

Called 3I/ATLAS, the comet is only the third of its kind known to astronomers, and it’s likely been heading our way for billions of years, carrying pristine material from another star system ...

A Harvard astronomer is suggesting that an interstellar object nearing Earth could be an engineered object — rather than a ...

A rare interstellar comet is flying through our solar system. Here's how—and when—you might be able to see Comet ATLAS from your backyard.

While the Earth orbits the Sun, the entire Solar System itself is also moving at a staggering 720,000 kilometers per hour (about 450,000 miles per hour) as it orbits the center of the Milky Way ...

Dive into the world of gravity and space with this C++ simulation of our solar system using OpenGL. In this video, explore ...

Discovered last month by a telescope in Chile, the comet known as 3I-Atlas is only the third known interstellar object to ...

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a comet from another star system.

An interstellar tourist is taking a quick trip through our solar system, becoming one of just three known objects to ever do so, according to NASA. A comet from a solar system outside our own was ...

A new image has revealed the clearest glimpse yet of an interstellar visitor zipping through our solar system. The Hubble Telescope and its Wide Field Camera 3 got an incredible view of the comet ...

The deep-space optical communication link could revolutionize how scientists communicate with spacecraft as they explore the solar system.