SOLAR SYSTEM

Detailed explanation-1: -These planets are much larger than the inner planets and are made primarily of gases and liquids, so they are also called gas giants or Jovian planets. The gas giants are made up primarily of hydrogen and helium, the same elements that make up most of the Sun.

Detailed explanation-2: -) In contrast, the four outer planets, also called the Jovian, or giant, planets-Jupiter, Saturn, Uranus, and Neptune-are large objects with densities less than 2 grams per cubic cm; they are composed primarily of hydrogen and helium (Jupiter and Saturn) or of ice, rock, hydrogen, and helium (Uranus and Neptune).…

Detailed explanation-3: -These planets were more massive than the inner planets and were able to attract large amounts of hydrogen and helium, which is why they are composed mainly of hydrogen and helium, the most abundant elements in the solar system, and in the universe.

Detailed explanation-4: -The Jovian Planets. From top: Jupiter, Saturn, Uranus and Neptune. Jupiter, Saturn, Uranus, and Neptune are known as the Jovian (Jupiter-like) planets, because they are all gigantic compared with Earth, and they have a gaseous nature like Jupiter’s–mostly hydrogen, with some helium and trace gases and ices.