A Comparison of
Venus and Earth
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.
These and other differences, only some of which we understand well, suggest
that we still have a lot to learn about our "sister planet".
- The slow rotational period, and retrograde rotation.
- The single-plate surface.
- The lack of a satellite (= a moon).
- The extremely weak magnetic field.
- The lack of water.
- The high surface temperature and dense atmosphere.