Though it won't become any brighter, Comet SWAN will reach its closest point to Earth on Oct. 20, coming within 24 million ...

If you get up before twilight begins to paint the eastern sky, you might be able to spot Comet C/2025 A6 (Lemmon). It's ...

I/ATLAS, only the third object from beyond our solar system ever spotted from Earth, was viewed from Mars by an orbiting European spacecraft.

For millions of years, a fragment of ice and dust drifted between the stars—like a sealed bottle cast into the cosmic ocean.

Every once in a while, our solar system receives a fleeting visitor from the depths of our galaxy. On July 1, 2025, NASA’s ...

The European Space Agency's ExoMars orbiter has captured the closest view yet of the interstellar comet 3I/ATLAS. The images ...