An Idea For A story

tell me wat u think of this idea imagine like earth technology found something strange by the moon it was a combination of asteroids grouping together to form a nearby planet LV-R36-2 near the moon so the government sends about 50 or 100 scientist, marines,soldiers elite pilots and government officials to check it out but something happens..... They find themselves facing preds and aliens, i have started to write a little of it i will try to have the introduction up in a couple of days... please tell me if this would be a good setting and main problem