Given the huge emptiness of interstellar space, all the objects listed here are likely to continue into deep space in timelines that, barring the exceptionally unlikely chance of their colliding with (or being collected by) another object, could outlast even the Main Sequence existence of the Sun's life, billions of years hence. One estimated timescale as to the likelihood of the Pioneer or Voyager spacecraft colliding with a star (or stellar remnant) is 10 (100 quintillion) years. They are very unlikely, however, to gain enough velocity to escape the Milky Way galaxy (or its future merger with the Andromeda galaxy) into intergalactic space.