Scientists have traced the origin of an interstellar comet, estimated to be around 10-12 billion years old, to a cold and isolated region of space, possibly within the Milky Way. The comet, known as 3I/ATLAS, has made its closest pass to the sun and is now leaving the solar system. Studies of the comet have yielded various findings, including a reported major breakthrough, although the nature of this discovery is not specified.