Add Yahoo as a preferred source to see more of our stories on Google. A stray comet from another star swings past Earth this week in one last hurrah before racing back toward interstellar space.

NASA released close-up images on Wednesday of the rare interstellar comet that's making a single pass through the solar system. One of the images shows the comet, also known as 3I/ATLAS, as it moves ...

A cool interstellar comet that for millions of years has drifted in the spaces between our stars is now back in our telescope viewing range and will make its closest approach to Earth this week. We’re ...