There are many planets smaller than Earth, including Mercury, Mars, and Venus. While these planets vary in size, they are all smaller than Earth in terms of diameter and mass.
The planets that have less mass than Earth are Mercury, Mars and Venus. The planets that have a lower average density than Earth are all of them; Earth is the most dense planet in our solar system.
Venus has lower gravity than Earth because it has a smaller mass than Earth. Gravity is directly proportional to the mass of a planet, so planets with smaller masses will have lower gravitational forces.
There are 8 planets Mercury (smaller than Earth) Venus (smaller than Earth) Earth Mars (smaller than Earth) Jupiter (bigger than Earth) Saturn (bigger than Earth) Uranus (bigger than Earth) Neptune (bigger than Earth) so 3 smaller & 4 bigger than Earth 37.5% smaller than Earth 50% bigger than Earth
Jupiter, Saturn, Uranus and Neptune are much larger than earth. Venus (slightly), Mars (by half) and Mercury are smaller than earth.
Four planets, Jupiter, Saturn, Uranus, and Neptune, have mass greater than that of the Earth.
Yes, all of the dwarf planets are smaller than the smallest inner planet (Mercury).
3 of the 8 planets (Mercury, Venus, Mars) are smaller than Earth.
There are 8 planets Mercury (smaller than Earth) Venus (smaller than Earth) Earth Mars (smaller than Earth) Jupiter (bigger than Earth) Saturn (bigger than Earth) Uranus (bigger than Earth) Neptune (bigger than Earth) so 3 smaller & 4 bigger than Earth 37.5% smaller than Earth 50% bigger than Earth
37.5% not including PlutoFirst Answer:50% including Pluto.Second Answer:Of the eight planets in our solar system, three are smaller than earth. 3/8 = 38%.However, we also know (to date) of more than a thousand other planets, orbiting distant stars. None of these planets so far is smaller than earth, but that it because planets as tiny as ours are difficult to detect. We expect probably half of all planets would be our size or smaller.
Most of the known extrasolar planets are more massive than Earth because massive planets are easier to detect. We have detected planets smaller than Earth.
From the Sun:Mercury is innermost and smallest (about the size of our Moon.)Venus is next and almost exactly the size of the Earth, just a shade smaller.Earth is next and it is - well- the Earth!Mars is the last of the rocky - Earthlike planets and it is smaller than Earth.See a picture comparing the sizes at: http://en.wikipedia.org/wiki/File:5_Terrestrial_planets_size_comparison.png