With Pluto now regarded as a dwarf planet, the answer is Neptune. There are times when Pluto's orbit takes it inside Neptune for about 20 years at a time out of its 248 year orbit, as it did from 1979 to 1999. So even when Pluto was considered a planet, it wasn't always the furthest away from the Sun.
In our solar system the outermost planet 'til March 1999 was considered the same as the outermost planet after March 1999 - it was Pluto. In 2006, the IAU reclassified Pluto as a minor or dwarf planet and no longer a true planet - this demotion meaning Neptune would thereafter be considered the outermost planet in our solar system. It is of course possible there is a planet out there not yet discovered, which is in solar orbit, and large enough, in which case its distance might qualify it as 'outermost'.
Neptune is the outermost large planet in our solar system. However, the outermost known planet in our system, when including all classifications of planets, is Sedna, a dwarf planet.
No. The outermost layer of the Earth is called the crust.
Oberon is the outermost major moon of the planet Uranus.
The outermost planet in our solar system, Neptune, is often referred to as the eighth planet. When Pluto was considered a planet (prior to 2006) during its orbit it would cross inside the orbit of Neptune making the latter the outermost planet.
Lithosphere is the outermost shell of a rocky planet.
Jupiter
In our solar system the outermost planet 'til March 1999 was considered the same as the outermost planet after March 1999 - it was Pluto. In 2006, the IAU reclassified Pluto as a minor or dwarf planet and no longer a true planet - this demotion meaning Neptune would thereafter be considered the outermost planet in our solar system. It is of course possible there is a planet out there not yet discovered, which is in solar orbit, and large enough, in which case its distance might qualify it as 'outermost'.
Uranus
Of the four inner terrestrial planets, Mars is the furthest from the sun. This is the outermost of the four inner planets.
The outermost region of a planet's atmosphere
The crust.
Pluto was considered the farthest planet until September 13th, 2006 when it was reclassified as a dwarf planet. But the correct answer would be neptune -goober;P
The mantal
It is the outermost planet.
Neptune is now considered the outermost planet, Pluto is the next one but it is no longer considered a planet.
No. The outermost layer of the Earth is called the crust.