A "celestial body" can be used to describe most any massive object in space (stars, planets, moons, etc.) that moves according to a predictable pattern.
the red planet
the red planet
blue planet
another name for mars is the 'red planet' , after its red-orange color.
No.
venus
an eclipse
It does not have another name in the English language.
There are many, including Planet X.
Sphere, orb, planet.
no
Another name for the planet pluto is "the dwarf planet"