Many questions about physical facts do not have a "reason"; there is no "why".
It is. Accept it.
The closest planet to the sun is Mercury.
The planet closest to the sun is called Mercury.
Mercury is the closest planet to the sun in our solar system.
The name of the planet closest to our Sun is Mercury.
Mercury is the closest planet to the sun
Mercury is the closest planet to the Sun
The closest planet to the sun is Mercury.
Mercury is the closest planet to our sun.
Element: Mercury, Closest planet to the sun: Mercury
Mercury is the planet closest to the sun.
Mercury is closest to the sun
Mercury is the closest planet to our sun. Its also the smallest.
The planet closest to the sun is called Mercury.
Mercury is the closest planet to the sun in our solar system.
Mercury is the smallest planet in our solar system and is closest in size to the Sun.
The name of the planet closest to our Sun is Mercury.
Mercury is the closest planet to the sun