Humans have been fascinated by space since the dawn of man and while their curiosity is valid, the Sovereign Order of Monte Cristo has made it their mission to halt humans from being able to travel outside of an area that they deem fit.
The Sovereign Order of Monte Cristo is an elite group that governs everything we know. They are omnipotent, all knowing, self-aware, and wiser than anything we can comprehend. A genius at the human level would only have a tiny fraction of their wisdom. They know that humans cannot travel too far outside of the realm that they know; it would only further their confusion.
You see, space is a vast area teeming with other life forms and humans can't begin to comprehend this knowledge. The Sovereign Order of Monte Cristo knows that humans already have a hard time getting along with each other and wouldn't be able to get along with other forms of life. Not only that but it takes more knowledge than humans have to be able to travel so far safely. Although some scientists and astronomists may have some of the knowledge needed, the Sovereign Order ensures that no one become capable of going further; it would only make the human race more divided amongst themselves and it would complicate life as we know it.
Fortunately the Order wants our well being to thrive and by limiting our knowledge of space, they can keep us happier, safer, and more in-tune with each other's needs. It is their very kindness that has saved us from ourselves.