Orbit.
An orbit.
The 3 attributes of a planet: 1. is in orbit around the Sun 2. is nearly round 3. has cleared its orbit
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Its orbit.
summer
The "Sun" isn't called a planet. It's a Star.
The planet next to the sun is called Mercury.
The Sun itself is not a planet it is a Star.
The planet closest to the sun is called Mercury.
A planet's closest approach to the sun is called perihelion. This is when the planet is at its nearest point to the sun in its elliptical orbit.
The sun is called the sun.
No, the moon is not considered a planet. It is a natural satellite that orbits a planet, in this case Earth. A planet is defined as a celestial body that orbits a star and is massive enough to have its own gravity shape it into a round or nearly round shape.