Neptune
The first planet in the solar system is Mercury
Mercury is the first planet in our solar system.
The first planet closest to the sun in our solar system is Mercury.
The first planet closest to the sun in our solar system is Mercury.
The first planet in our solar system is Mercury.
In our Solar System, the closest planet to the Sun is Mercury, and the furthest is Neptune.
Not in my solar system.
The planet that is closest to the sun is Mercury.
The first planet after the asteroid belt is Mars. It is the fourth planet from the Sun in our solar system.
Mercury is the first planet from the sun.
Jupiter
It's not the first planet of the universe, it's the first planet in the solar system.