original: neptune is the eighth and outermost-known planet from the sun in the solar system .
simplifications: neptune is the eighth and outermost-known planet from the sun . neptune is the eighth planet from the sun in the solar system , and no planets are known to exist farther out . neptune is the eighth and outermost-known planet from the sun in the solar system . neptune is the eighth and farthest planet from the sun in the solar system . neptune is the eighth and outermost-known planet from the sun in the solar system . neptune is the eighth and outermost-known planet from the sun in the solar system . neptune is the eighth and outermost planet from the sun in the solar system . neptune is the eighth and farthest-known planet from the sun in the solar system .