You are a very strong college applicant, but MIT is one of the most selective colleges in the world, and it’s hard for a high school student to know just how strong the national and international competition is. The NASA internship is certainly selective, but that level of accomplishment is very typical of applicants to MIT.
Based upon what I see, I agree with you and @michaelcollege that MIT is a high reach. What could change that? One thing is if you are a lower income family in which case your accomplishments would be considered compared to other lower income applicants. Another is if your research paper gets published in a peer reviewed journal.
My recommendation is that you ED to Cornell. I would also like to see the rest of your college list. If you are really set on astronomy, I would hope that includes Arizona.