What causes the outer objects in this image (like Pluto, Haumea, Makemake, and Eris) to move more slowly along their orbits than the inner objects (like Mercury and Venus) do? O The Sun's gravity gets stronger, the farther you go from the Sun. O There is a lot of dust in that part of the solar system, and collisions with the dust particles tend to slow down the orbital speeds of objects there. The Sun's gravity gets weaker, the farther you go from the Sun. O In this outer region, the gravity of other stars is stronger than the Sun's gravity, and this tends to slow down objects' orbital speeds