Astronomers found a discrepancy in measurements of the iron found in the light spectrum of the sun and other stars. Iron that is highly charged takes up most of the spectrum in certain wavelengths, but is not as strong as scientists expected. "This is something special [that we found]. This is no deviation," said Max Planck Institute of Nuclear Physics researcher Sven Bernitt, who is also the lead author of a paper published today in the journal Nature. The study suggests that the discrepancy lies in a flawed atomic model.