The author suggests that sudying Venus is a worthy pursuit, which means that theres many challenging things on the planats surface that we don't know but have to learn.

In paragragh 3 it says "Even more challenging are the clouds of highly corrosive sulfuric acid in Venus's atmosphere" meaning that Venus isnt the only thing that is challenging also meaning that, clouds highly corrosive are more challenging to learn or even study about. Venus is the secound planet from our sun, it has proved a very challenging place to examine more closely its often referred to as Earth's twin. In paragragh 4 it says " venus was probably covered largely with oceans", so maybe we didnt even realize we had it because it was covered by oceans or maybe it just didnt wan to be seen.

The author says in paragragh 8 that " Venus has vaule , not only becasue of the insight to be gained on the planet itself, but also becasue human curiosity will likely lead us into many equally intimidating endeavors".