The proposed argument should be either for these two claims: 

 It's morally justified only to bring the best and the brightest to space at the expense of the rest who will be left on the earth. It's not morally justified to only bring the best and the brightest to space at the expense of the rest who will be left on Earth. 

Provide Propose argument to the ff Dilemma: 

Suppose that the earth is near the end of its lifecycle. To save humanity, spaceships have been developed for interplanetary travel and the creation of other planetary colonies: However: 

1. The spaceships can only carry a few people relative to Earth's population. 

2. These people who will be carried to space for human colonies will only be the best and brightest. 

3. The launching of these spaceships will also fast-forward to the end of the earth's lifecycle.