Planet X was a hypothetical planet which was searched for after the discovery of planet Neptune. `Planet-X` does not exist.
these are all of the outer planets in outer space: jupiter, saturn, uranus, neptune, and pluto
Neptune is a planet.
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Planet Neptune is the eighth planet from the sun.
Neptune is an outer planet. It is the outermost planet in the solar system.
I think planet x was the last to be discovered. Not sure
Neptune's vision is blue and it is the 8th planet. There is Neptune because it is a planet.
Neptune is the eighth and furthest planet from the Sun.
Neptune is the eighth planet from the sunneptuneNeptune.
if Pluto is not considered a planet, its neptune.
The planet before Neptune is Uranus. The planet after Neptune is Pluto but Pluto is know classified as a dwarf planet.