The definition of a finger is a digit on your hand or anything that looks like or functions like a finger. Thumb - The thumb is the short, stubby finger that can rotate in all directions (opposable thumb). The anatomical name for the thumb is the 1st finger.
Pluto is thought to be made of mostly ice. It probably also has a small rocky core which might contain some metals. The ice on the surface of Pluto is made of frozen nitrogen, methane and carbon monoxide. The ice covering Pluto reflects a lot of sunlight making it appear brighter than it would if it had been covered with a darker rocky material. 1  Javascript must be enabled to use Cool Cosmos.
Pluto's mass is only 0.2 percent of planet Earth's mass. Orbit. Pluto has a strange orbit. It was the only one to cross another planet's orbit. Pluto's orbit tilts up from the Solar System plane. It takes Pluto 6 days 9 hours to rotate and 248 Earth years to complete an orbit around the Sun.It's orbit is off-center in relation to the Sun. That leads Pluto across planet Neptune's path.Size. Pluto is less than half the size of any major planet.luto's orbit tilts up from the Solar System plane. It takes Pluto 6 days 9 hours to rotate and 248 Earth years to complete an orbit around the Sun. It's orbit is off-center in relation to the Sun.