Answer:
- The Astronauts will establish space colonies on our moon and on Mars someday.
Step-by-step explanation:
Passive voice is primarily characterized as the grammatical construction in which the subject or the doer of the sentence receives the action of the verb. While in the active voice, the subject directly performs the action of the verb. In order to convert the given passive sentence into active, the subject 'astronauts' will perform the function of 'establishing.' Thus, the sentence in active voice reads as:
'The Astronauts will establish space colonies on our moon and on Mars someday.'