These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling through space for hundreds of millions of years, even billions of

NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the Atlas telescope in Chile earlier this week, and has confirmed it was a comet from another star system.

NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the sky-surveying Atlas telescope in Chile earlier this week, and has confirmed