Add punctuation: In fact the evidence was not strong enough to persuade Jacques Cassini who never conceded defeat but it did convince CsarFranois Cassini who made the difficult decision to change sides in the arguments and oppose his familys long held view
A: In fact the evidence was not strong enough to persuade Jacques Cassini , who never conceded defeat, but it did convince Cesar-Francois Cassini who made the difficult decision to change sides in the arguments and oppose his family's long held view.

Add punctuation: The flowers are small amethyst color are collected in spikes which in turn form numerous umbellate inflorescence
A: The flowers are small, amethyst color, are collected in spikes, which in turn form numerous umbellate inflorescence.

Add punctuation: As the craft heads out of the Solar System the change in frequency of the signals received on Earth enables engineers to calculate the speed of the spacecraft
A:
As the craft heads out of the Solar System, the change in frequency of the signals received on Earth enables engineers to calculate the speed of the spacecraft.