venus
Venus because it is almost the same size as Earth.
Earth
Neptune and uranus are called twins. The Earth and Venus are called twins because of the similarity in size. See the related link for more information. The Earth and mars are not considered twins.
It is not considered a planet, it is a planet, just like Earth, Venus, Neptune (etc).
earth is considered as a planet because it is a part of solar system
No, the moon is not considered a planet. It is a natural satellite that orbits around a planet, in this case, Earth.
The Moon is a natural satellite of Earth; it was never considered a planet.
aren't venus and earth considered twins? even though they are the same size they are made up of different things....i think, this is purely from my knowledge
The Earth is considered a rocky planet.
The Earth is considered to be a big planet. In contrast, the Earth Venus is smaller then the Earth and Neptune is considered larger.
There is no sub planet of Earth. Earth is considered a standalone planet within our solar system.
Mars, Earth, Venus, and Mercury.