Maurizio Salaris mainly investigates Astrophysics, Astronomy, Globular cluster, Stars and Metallicity. His Horizontal branch, Stellar evolution, Galaxy, Red-giant branch and Open cluster investigations are all subjects of Astrophysics research. His studies deal with areas such as Asymptotic giant branch and Stellar mass as well as Stellar evolution.

The Globular cluster study combines topics in areas such as Astrometry, Galaxy groups and clusters, Photometric system and Hertzsprung–Russell diagram. His work on Low Mass as part of general Stars research is frequently linked to Parameter space, thereby connecting diverse disciplines of science. He combines subjects such as Stellar population and Luminosity function with his study of Metallicity.