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.
Confidence votes 55. The outer of the planets are made mostly of gases like hydrogen, helium and nitrogen. 1  The Gas Giants-Jupiter and Saturn are composed of mainly hydrogen and helium. 2  The Ice Giants-Uranus and Neptune are composed of hydrogen and helium but have much more methane and ices.3  they are all made of liquid, too.onfidence votes 55. The outer of the planets are made mostly of gases like hydrogen, helium and nitrogen. 1  The Gas Giants-Jupiter and Saturn are composed of mainly hydrogen and helium. 2  The Ice Giants-Uranus and Neptune are composed of hydrogen and helium but have much more methane and ices.