NASA has discovered an interstellar comet that's wandered into our backyard. Luckily, it won't get near enough to be a threat to our planet.

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

July 3 (UPI) -- NASA discovered the third interstellar comet through a survey telescope in Rio Hurtado, Chile. The interstellar comet first observed on Tuesday by NASA's Asteroid Terrestrial-impact Alert System telescope, or ATLAS, has been officially named 3I/ATLAS.