There are no planets that we know of that are exactly the same size.
With a radius of 3396km, the planet Mars is about the same size as the inner and outer core of the earth (which is around 3490km radius in total).
Mercury is roughly the same size, but it is bigger than our Moon.
Neptune
Neptune is the closest in radius to Uranus, at about 740km or 3% smaller.
If the planet is smaller, then it can't have the same size. If you assume that a smaller planet has the same density as Earth (and therefore less mass), its surface gravity will be smaller. If you assume that a smaller planet has the same mass as Earth (and therefore more density), its surface gravity will be greater. This is because we would be closer to the planet's center - or to the planet's matter in general.
There is no planet that has the same size moon as the planet. This is only possible if Pluto was still a planet.
Mars is the second largest but it can be argued between scientist's Mars may be the same size of another planet or be smaller than another planet
No planet is exactly the size of Earth. Venus is close to Earth's size but slightly smaller.
Their is no planet the same size as Pluto, Mercury is slightly bigger than Pluto. As for other objects in the solar system, the dwarf planet Eris and Neptune's moon Triton are close in size to Pluto.
well you see, when a planet, hits another planet, it blows up. you stupid prick
the planet venus.... size is about the same
Venus Its sister planet
Venus
No planet is the same as Neptune. Uranus is similar in size, but is quite different in its composition.
No they don't. for every planet their size varies.
With a radius of 3396km, the planet Mars is about the same size as the inner and outer core of the earth (which is around 3490km radius in total).
Mercury is roughly the same size, but it is bigger than our Moon.