We close the discussion of Venus by noting that despite the original prejudices that Earth and Venus were sister planets, there are many differences between them. Among them we may list the following features of Venus that differ substantially from the corresponding situation for the Earth.

1. The slow rotational period.

2. The single-plate surface.

3. The lack of a satellite.

4. The extremely weak magnetic field.

5. The lack of water.

6. The high surface temperature and dense atmosphere.