Skull Rock is an iron-nickel meteorite! - Sol 339 (Approximate True Colors; credits: NASA/JPL-Caltech)

Dunque avevamo visto giusto: Skull Rock sembrava "estranea" al paesaggio Marziano di Meridiani Planum perchè NON è una roccia Marziana! Skull Rock è - a quanto dice la NASA - il frammento di una meteora precipitata su Marte. EccoVi la caption NASA originale:"NASA's Mars Exploration Rover Opportunity has found an iron meteorite on Mars, the first meteorite of any type ever identified on another planet. The pitted, basketball-size object is mostly made of iron and nickel. Readings from spectrometers on the Rover determined that composition. Opportunity used its panoramic camera to take the images used in this approximately true-color composite on Sol 339. This composite combines images taken through the PanCam's 600-nanometer (red), 530-nanometer (green) and 480-nanometer (blue) filters".