Global Modelling of Ganymede's Surface Composition: Near-IR Mapping from VLT/SPHERE - Astrobiology News

We present maps of Ganymede's surface composition with almost complete longitude coverage, acquired using high spatial resolution near-infrared (0.95 to 1.65?m) observations from the ground-based VLT/SPHERE instrument.
Normalised 2.25/2.11 µm spectral ratio as measured by the dual band IRDIS instrument (top). Water ice has a strong absorption at 2 µm (see Figure 1), so brighter areas generally indicate a higher ice… [+2704 chars] Read More