universe
A large grouping of stars in space is commonly referred to as the galaxy. This can also be called the solar system since planets are also types of stars.
Planets, moons, asteroids.
The Terrestrial planets have a higher density. Their structure includes a large percentage of rock, while the Jovian planets are composed mostly of gas.
The large planets of the Solar system are Jupiter, Saturn, Neptune and Uranus. They are considered gas giants because they consist mostly of gas with no solid surface.
Personally I'd call anything that is large enough to rotate around the Sun is a planet. However, that causes "loads" of problems, orbits and mass etc. If that criteria was used we'd have hundreds/thousands of planets and sooo many problems. The current criteria makes sense and should be used. It matters not if an "object" in space is a planet, dwarf, asteroid or comet - it's nothing more than a "lump" of something orbiting the Sun.
The Milky Way Galaxy
A large grouping of stars in space is commonly referred to as the galaxy. This can also be called the solar system since planets are also types of stars.
In both systems, the Moon goes around the Earth.
Planets, moons, asteroids.
Which planet are you talking about?
Not in our solar system. The inner planets are smaller.
The Terrestrial planets have a higher density. Their structure includes a large percentage of rock, while the Jovian planets are composed mostly of gas.
Mercury is not large: it is the smallest of the planets in the solar system.
The large planets of the Solar system are Jupiter, Saturn, Neptune and Uranus. They are considered gas giants because they consist mostly of gas with no solid surface.
Personally I'd call anything that is large enough to rotate around the Sun is a planet. However, that causes "loads" of problems, orbits and mass etc. If that criteria was used we'd have hundreds/thousands of planets and sooo many problems. The current criteria makes sense and should be used. It matters not if an "object" in space is a planet, dwarf, asteroid or comet - it's nothing more than a "lump" of something orbiting the Sun.
These are the four outer planets, known as the gas giants. Jupiter, Saturn, Uranus and Neptune.
The eight planets of our system are not considered small solar system bodies, to qualify as a planet in the first place means that they have to be quite large. Small solar system bodies are such things as comets, asteroids, meterorids, moons or minor planets.