In this scenario, the Venn diagram is comparing Earth and the Moon.
On one side of the Venn diagram (Earth):
- Surface features such as mountains, valleys, and volcanoes.
On the other side of the Venn diagram (Moon):
- Unable to land on because there’s no solid surface.
In the overlapping section (both):
- Both have solid surfaces (though the statement provided seems to suggest that only one side does).
If you are specifically focusing on the "unable to land on because there's no solid surface," that would typically point to gas giants (like Jupiter or Saturn) or other celestial bodies with no solid feature, but for the purposes of your activity, Earth and the Moon generally fit best in a comparison involving solid surfaces and recognizable features.
If you intended to include objects like gas giants or other unlandable celestial bodies, then you might want to clarify.