Researchers from Penn's Department of Physics and Astronomy have developed a new method for better understanding the relationship between a star's chemical composition and planet formation. The study ...

The chemical composition of a planetary body reflects its starting conditions modified by numerous processes during its formation and geological evolution. Measurements by X-ray, gamma-ray, and ...

What do you get when you kick up a whole lot of debris from an icy comet under the watchful eye of a powerful infrared telescope-spectrometer? An up-close look at the chemical composition of the ...