Input (grade 10): The surface of Amalthea is very red (that is, its reflectivity increases with the wavelength from the green to near-infrared). The reddish color may be due to sulfur originating from Io or some other non-ice material.
Output (grade 10): The surface of Amalthea is very red The reddish color may be due to sulfur coming from Io or some other non ice material.