Neither.
It is neither the smallest nor the biggest.
Neptune is a big planet but jupiter is the biggest planet in the solar system and Mercury is the smallest.
Jupiter - (diameter - 142,800 km)SaturnUranusNeptuneEarthVenusMarsMercury
Jupiter (largest), Saturn, Uranus, Neptune, Earth, Venus, Mars and Mercury (smallest).
Jupiter (largest), Saturn, Uranus, Neptune, Earth, Venus, Mars and Mercury (smallest).
No, Neptune is not the smallest planet in our solar system. In fact, Neptune is the fourth largest planet by diameter, after Jupiter, Saturn, and Uranus. Mercury holds the title of being the smallest planet in our solar system.
Neither one! Jupiter is the biggest and Neptune is the smallest. If they didn't announce that Pluto wasn't a planet anymore, Pluto would be the smallest.
Mercury Mars Venus Earth Uranus Neptune Saturn Jupiter
Neither. It is fourth in size, from smallest to biggest (not including Pluto), with Jupiter Saturn Uranus and Neptune being larger than earth, Venus, Mars and Mercury being smaller.
Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury
Order of planets from largest to smallest goes like this: Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury and smallest Pluto.
Neptune is the smallest gas giant in our solar system.