What are the characteristics of the inner and outer planets of solar system?

Inner planets:
1. Closer to the Sun
2. Made mostly of rock and metal
3. Have solid surfaces
4. Few or no moons
5. Shorter orbital periods
6. Warmer temperatures
7. Terrestrial planets

Outer planets:
1. Farther from the Sun
2. Made mostly of gas and ice
3. Have no solid surface
4. Many moons
5. Longer orbital periods
6. Colder temperatures
7. Gas giants

Inner Planets (Mercury, Venus, Earth, Mars)

- Rocky composition: Primarily composed of silicate rocks and metals (iron, nickel).
- Smaller in size and mass: Mercury is the smallest planet (4,880 km), while Earth is the largest (12,756 km).
- Dense: Have relatively high densities, with Earth being the densest (5.51 g/cm³).
- Fewer moons: Mars has two small moons (Phobos and Deimos), while Venus and Mercury have no moons.
- Thin or no atmospheres: Venus has a thick, carbon dioxide atmosphere, while Mercury and Mars have very thin atmospheres.
- Little to no surface water: Earth has liquid water on its surface, while Mars has some water ice at its poles.
- Hotter surface temperatures: Closer to the Sun, so they experience higher surface temperatures, especially Venus (462°C).

Outer Planets (Jupiter, Saturn, Uranus, Neptune)

- Gaseous composition: Primarily composed of gases (hydrogen, helium), with a small rocky core.
- Larger in size and mass: Jupiter is the largest planet (142,984 km), while Neptune is the smallest (49,244 km).
- Lower densities: Have relatively low densities, with Saturn being the least dense (0.687 g/cm³).
- Many moons: Jupiter has 80 known moons, Saturn has 62, Uranus has 27, and Neptune has 14.
- Thick atmospheres: Have thick, gaseous atmospheres that contain clouds and storms.
- Presence of liquid water: Suspected to have subsurface oceans of liquid water, especially Jupiter and Saturn.
- Colder surface temperatures: Farther from the Sun, so they experience colder surface temperatures, especially Neptune (-200°C).