rit.edu rit.edu rit.edu rit.edu How do we know the composition of stars? rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu Rochester Institute of Technology rit.edu How do we know the composition of stars? rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu rit.edu How do we know the composition of stars? rit.edu How do we know the composition of stars? rit.edu rit.edu