So the asteroids path and trajectory were caused by the introduction of sin and now god cannot change the path of the asteroid to prevent it impacting and killing people?
Of course he could, but doesn't. Why? No one knows. You can come up with hundreds of possible reasons. From that with proof of a god there is no true free will. To teachings of people like Ellen White and the great controversy, which states that Satan challenged god and said he wasn't caring and only wanted beings that loved him through being programmed rather than free will(or something like that) So we are the great experiment to show Satan is wrong and show all other beings this. Or a hundreaf other reasons inbetween.