Gas Giant Planets in our Solar System

Gas Giant Planets in our Solar System

General Characteristics

  • Gas giants also known as Jovian planets, are predominantely composed of hydrogen and helium.
  • These planets don’t have a solid surface but rather have cores surrounded by massive layers of gas.
  • Mercury, Venus, Earth, and Mars are known as terrestrial planets whereas Jupiter, Saturn, Uranus, and Neptune are gas giants.
  • They are characterised by their large sizes and low densities.
  • Gas giants have strong magnetic fields and a large number of moons.

Jupiter

  • Jupiter is the largest planet in our solar system, more than twice as massive as all the other planets combined.
  • Its strong magnetic field generates spectacular auroras around the planet’s poles, similar to the northern and southern lights on Earth.
  • Giant storms churn through its atmosphere, including the notorious Great Red Spot - a storm that has lasted at least 300 years.
  • It has a faint ring system and a large number of moons, including Ganymede which is the largest moon in the solar system.

Saturn

  • Saturn is most famous for its spectacular ring system, composed of ice particles and rock debris.
  • It is the least dense of all the planets, and is the only one that’s less dense than water.
  • Its atmosphere is primarily composed of hydrogen and helium, with traces of ammonia, water vapour and methane.
  • Saturn also has numerous moons, its largest moon, Titan, is bigger than the planet Mercury.

Uranus

  • Uranus is known for its distinct blue-green colour - a result of absorption of red light by methane in the upper atmosphere.
  • It has a complex system of thin dark rings, made of tiny particles of ice and dust.
  • Unlike all other planets, Uranus rotates on its side, which creates unusual seasonal changes.
  • With 27 known moons, the most remarkable is Titania which is the largest and comprises approximately one third of the mass of the entire Uranian moon system.

Neptune

  • Neptune is a deep-blue in colour due to its methane-rich atmosphere and farthest from the Sun.
  • Its azure colour is due to methane’s absorption of red light and the scattering of blue light back out into space.
  • Neptune’s atmosphere has large storms and features the strongest winds out of all the planets in the solar system.
  • It has a faint ring system and 14 known moons, of which Triton is the largest.