A total of eight planets are there in our solar system. The planet Earth has an equatorial diameter of 12,756km. Only three planets in our solar system are smaller than Earth in terms of mass and diameter:
>> Mercury – It is 13. 72 percent smaller than Earth as it has the equatorial diameter of 4,879km.
>> Venus – It is 0.23 percent smaller than Earth as it has the equatorial diameter of12,104km
>> Mars – It is 9.42% percent smaller than Earth as it has the equatorial diameter of 6,792km