Smallest planet: The right answer for

The right answer for this question is that the smallest planet in our Solar System is Mercury. Introduction to Mercury: The Smallest Planet Mercury is one of the eight planets that orbit the Sun in our Solar System. It is the smallest and the closest planet to the Sun. This makes Mercury the first planet in the solar system, neighbour to planet ... If you’re talking about planets in our Solar System, that’s easy to answer: the smallest planet is Mercury. Mercury is the smallest of all the eight planets whether you’re looking at 'size' in terms of radius, volume or mass. Mercury is the first planet from the Sun and the smallest in the Solar System. It is a rocky planet with a trace atmosphere and a surface gravity slightly higher than that of Mars. 5. Our home planet Earth is the fifth largest of the eight planets and measures in at 12,756 km in diameter. This means that Earth is actually approximately 2.6 times the diameter of the smallest planet, Mercury. Another size comparison puts Earth at 3.67 times the diameter of the Moon. 6.