Is the exosphere the outer layer of the thermshere?

Which planet has the Galilean moons orbiting around it? Why is the camel in Giotto adoration of the Magi not exactly realistic? What consellation is the big dipper in? What does the crossiant mean? What robots have been to Venus? What is Zeus' the Greek god's symbol? What does a sky card do? The earths gravity keeps the planets circling the sun? What is the line that separates the light and dark sides of the moon? How would a human die on Jupiter? A star that has collapsed under gravity? Why does the moon ring like a bell when something hit it? When water vapor touches a cold window it can? How can I safely view the eclipse using welding glasses? What are the highlands of the moon composed of? "How compatible is dream cloud and their products"? The mass of water vapor contained in a given volume of air at a specific time? When did Apollo 13 launch? How can a spacecraft in outer spacer travel at a constant speed and in a specific direction without slowing down even when the engines are turned off? How long Apollo 13 have been in space?