Curiosity brushes ‘Bonanza King’ drill target on Mars NASA’s Curiosity rover looks back to ramp with 4th drill site target at ‘Bonanza King’ rock outcrop in ‘Hidden Valley’ in this photo mosaic view captured on Aug. 6, 2014, Sol 711. Inset shows results of brushing on Aug. 17, Sol 722, that revealed gray patch beneath … Continue reading "Curiosity Brushes ‘Bonanza King’ Target Anticipating Fourth Red Planet Rock Drilling"