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There are actually nine planets in our solar system.

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Q: What is the second smallest planet out of the eight planets?
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Related questions

Was Pluto the smallest planet ever?

Yes, it was the smallest of the nine planets until reclassified as a dwarf planet in 2006. Now it is the second largest of the five dwarf planets, while mercury is now the smallest of the eight major planets.


Which is smallest planet?

Mercury is the smallest of the eight planets.


What is the smallest planet and what is the farthest planet from the sun?

Mercury is the smallest of the eight planets, but is the closest. The furthest planet is Neptune, but its not the smallest.


Which is the smallest planet is it Pluto?

Mercury is the smallest of the eight official planets, then there are dwarf planets that are smaller.


What planet is the smallest planet not including dwarf planet?

Mercury is one of the four inner terrestrial planets, or rocky planets. It is the smallest of the four and closest to the sun. It is also the smallest of all eight planets.


Is mercury the smallest planet in space?

One cannot say for sure if it is the smallest planet in space, but it is the smallest planet in our Solar System.


What is the name of the smallest planet known?

Mercury is the smallest of the eight planets in our solar system, with a diameter of 4880km.


Is titan the smallest planet in the world?

Titan is the largest moon of Saturn. The smallest of the eight planets is Mercury.


What size is mars largest or smallest?

Neither. Of the eight planets its the second smallest after Mercury.


Which one is the smallest planet?

Pluto used to be the smallest planet, but it's not a planet any more! That makes Mercury the smallest planet in our Solar System. The second smallest planet in the Solar System is now Mars, measuring 6792 km across.


What planet has the smallest mass?

Mercury, with a mass of 0.055 times that of the Earth.Mercury is the smallest of the eight planets, and has the lowest mass.


Is Pluto the smallest planet in the solor system?

Pluto is no longer classified as a planet - it is now officially (by the IAU) considered a "dwarf planet". The smallest of the eight remaining planets is Mercury.