Mike Malin, the scientist in charge of Curiosity’s cameras, said a trained eye could already see differences in the red planet’s geology based on black and white images that the rover sent, but that color is especially important for everyone else.
"We’re not sure what the differences are, but they’re real differences and they’re much more easily seen in color," Malin said. "The human perception system can discriminate something on the order of a thousand different colors, but only about 60 different grayscales."
Scientists at NASA's Jet Propulsion Lab in Pasadena plan to debrief more on Friday morning about Curiosity's entry, descent and landing on Mars.
PHOTOS: Check out our full gallery of photos from the Red Planet!