[3] This instrument will measure the composition of small, solid particles ejected from Europa, providing the opportunity to directly sample the surface and potential plumes on low-altitude flybys.

Europa's internal liquid water ocean has been identified as one of the locations in the Solar System that may offer habitable environments to microbial extraterrestrial life.

[4][5][6] The basic idea of compositional mapping is that moons without an atmosphere are surrounded by clouds of dust particles released from their surfaces by meteoroid bombardment.

[2] Since these grains are direct samples from the moons' icy surfaces, determination of their composition will help to define and constrain the geological activities on and below the moons' surface, the exchange processes with the deeper interior, and assess its internal ocean habitability potential.

[2][7] The instrument is capable of identifying traces of organic and inorganic compounds in the ice of ejecta.