Hello Elizabeth,
I studied physics at the University of Minnesota in Minneapolis. I now work at the University of Iowa, in Iowa City. We teach lots of students here who are studying to be scientists.
These are not the only two universities you can attend if you would like to pursue a career in science. There are many excellent schools around the country where you can get a degree in physics, astronomy, or engineering. When you are ready to go to college, you will just need to spend a little bit of time looking up information about schools to find one that fits your interests. You can read about different schools at your local library or look up information about specific science departments at a school on the Internet.
Kris