Yaël, although Venus and Earth are similar in size and mass, the two planets aren't really much like one another.

Let's take geology.

Earth is a geologically active world.

Its crust is divided into seven large plates, and several smaller ones.

These plates move in relation to one another, building mountains and generating earthquakes where they collide.

Upwelling heat from Earth's mantle causes volcanic eruptions.

Venus, in contrast, is geologically quiet and boring.

That's not entirely right, Don.

It's true that Venus's crust doesn't seem to be divided into moving tectonic plates like the Earth's crust is.

But, researchers have found that the planet's surface is dotted with ring-like structures named coronae, produced by volcanic activity.