Light detected from exoplanetary systems will mostly be starlight as the light from the planet itself will always be too faint compared to the star. Studying starlight opens door a vast of information on the nature of the exoplanet in orbit. Study of line spectra enables to find out the chemical composition that makes up the star.

Determine the limits for detecting light from the exoplanet directly and determine if any planet defined as a terrestrial exoplanet in (1) could be detected from its own reflected light.

Examine how the study of starlight can help to determine if an exoplanet has an atmosphere and what molecules are present on such atmosphere. Investigate the line spectra of detected exoplanets and determine the atmospheric composition i.e. what molecules have been detected etc.