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Mars Curiosity Rover Samples a Rock of a Different Color

/ Source: Space.com
Image: Test hole
NASA's Curiosity rover completed this "mini-drill" test on the Windjana rock on April 29.NASA / JPL-Caltech / MSSS

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NASA's Curiosity rover has collected samples from deep inside a rock on Mars for the third time ever.

The 1-ton Curiosity rover bored into a slab of Red Planet sandstone dubbed Windjana on Monday evening, creating a hole measuring 0.63 inches (1.6 centimeters) wide and 2.6 inches (6.5 centimeters) deep, NASA said.

In the coming days, Curiosity will use its scientific instruments to analyze the powder collected during this drilling operation.

Image: Two drill holes
An image from the Curiosity rover's navigation camera shows two holes at top center, drilled into a sandstone target called Windjana.NASA / JPL-Caltech

"The drill tailings from this rock are darker-toned and less red than we saw at the two previous drill sites," Jim Bell of Arizona State University, deputy principal investigator for Curiosity's MastCam, said in a statement. [Latest Amazing Photos From the Curiosity Rover]

The team chose to drill into Windjana partly to investigate the material that binds sand-size grains together in the rock, NASA officials said.

The newly drilled hole is close to a shallow test hole Curiosity dug last week to get a preview of Windjana's interior.

Image: Test hole
NASA's Curiosity rover completed this "mini-drill" test on the Windjana rock on April 29.NASA / JPL-Caltech / MSSS

In its two previous drilling activities, Curiosity bored into fine-grained mudstones at a site called Yellowknife Bay, which is close to the spot where the rover touched down in August 2012. Analysis of the resulting samples revealed that, billions of years ago, Yellowknife Bay harbored an environment capable of supporting microbial life.

The Windjana rock is about 2.5 miles (4 kilometers) southwest of Yellowknife Bay, on the way toward the foothills of 3-mile-high (5-kilometer-high) Mount Sharp. Mount Sharp is Curiosity's ultimate science destination.

ā€” Mike Wall, Space.com

This is a condensed version of a report from Space.com. Read the full report. Follow Mike Wall on Twitter and Google+. Follow Space.com on Twitter, Facebook or Google+.

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