Explain your answer. Titan has a thick atmosphere and is the only large moon of the outer planets to have a significant atmosphere. But the other large moons are very similar in size and composition to Titan. Take Jupiter's moon Ganymede, for example. It is a little bit larger than Titan, pretty much the same density, so if anything it should be better able to hold onto an atmosphere once it gets one.
Triton is one of the oddest moons in the outer solar system.
Here on Earth, tons of meteoritic material falls to the ground every day. Explain why the most likely time to see these infalling particles is in the hours before dawn. The planet Venus has the same gravitational pull as Earth, but it is somewhat closer to the Sun. Explain your answer. Explain the origin of these pressure differences.