As for the first part, Cost, Radiation exposure to humans, No water or heat, and unfit soil. As for the second, Astronomers, Botanists, and obviously your fair share of rocket scientists and math matitions for the way up.
Are you going based on an article?
Autonomy is within sovereignty. autonomy basically is having some form of freedom of self governing and this not mean a sovereign state. sovereignty on the other hand is the totality of a nations delineated boundary where a country exercise full control especially in the form of defense.
When a noun o pronoun follows another noun or pronoun is called APPOSITIVE or APPOSITIVE PHRASE
