Smaller than:
* Jupiter: The largest planet, Earth is about 11 times smaller in diameter.
* Saturn: The second-largest planet, Earth is about 9 times smaller in diameter.
* Uranus: Earth is about 4 times smaller in diameter.
* Neptune: Earth is about 4 times smaller in diameter.
Larger than:
* Mars: Earth is about twice the size of Mars in diameter.
* Venus: Earth is slightly larger than Venus in diameter.
* Mercury: Earth is about 3 times larger than Mercury in diameter.
Similar to:
* Venus: Both planets have very similar sizes and masses.
Interesting fact: If you could fit all the planets in our solar system inside Earth, they would all fit comfortably with plenty of room to spare!
Here's a helpful visual:
[Image of the planets in order of size, with Earth highlighted]
