By: Mike Wall
Published: 01/30/2013 08:50 AM EST on SPACE.com
NASA's Mars rover Curiosity is sizing up a target rock and flexing its robotic arm ahead of its first-ever drilling activity on the Red Planet, which should take place in the coming days.
The 1-ton Curiosity rover pressed down on the rock in four different places with its arm-mounted drill Monday (Jan. 27). These "pre-load" tests should allow mission engineers to see if the amount of force applied matches predictions, researchers said.
The six-wheeled robot won't be ready to start boring into the rock until it completes several additional hardware tests and other checks, which should keep the rover busy through at least the end of this week, they added.
"We are proceeding with caution in the approach to Curiosity's first drilling," Daniel Limonadi of NASA's Jet Propulsion Laboratory in Pasadena, Calif, lead systems engineer for Curiosity's surface sampling and science system, said in a statement. "This is challenging. It will be the first time any robot has drilled into a rock to collect a sample on Mars." [
Curiosity to Drill First Martian Rock (Video)]
Curiosity's next step is an overnight pre-load test, which will tell the rover team if the big temperature swings at Curiosity's Gale Crater landing site pose any potential problems for drilling operations.
Air temperatures at Gale can drop from 32 degrees Fahrenheit (0 degrees Celsius) in the afternoon to minus 85 degrees Fahrenheit (minus 65 degrees Celsius) at night. The rover's chassis, arm and mobility system can grow and shrink by about 0.1 inches (0.25 centimeters) over such a broad temperature range, researchers said.
"We don't plan on leaving the drill in a rock overnight once we start drilling, but in case that happens, it is important to know what to expect in terms of stress on the hardware," Limonadi said.
Other pre-drilling activities include a detailed assessment of the target rock, which is part of an outcrop that mission scientists have dubbed "John Klein." The team will also employ the drill's hammering action briefly without actually spinning the drill bit, to make sure the percussion mechanism and associated systems are working properly.
And the first bite Curiosity actually takes out of a rock will not produce samples for analysis, researchers said. Rather, the rover will perform a "mini-drill" activity, going less than 0.8 inches (2 cm) into the rock — too shallow to push powder into the drill's sample-snagging chamber.
"The purpose is to see whether the tailings are behaving the way we expect," Limonadi said. "Do they look like dry powder? That's what we want to confirm."
Curiosity landed on Aug. 5 of last year, kicking off a surface mission to determine if the Gale Crater area has ever been capable of supporting microbial life. The robot carries 10 different science instruments to aid in this quest, along with other tools such as the drill, which can bore 1 inch (2.5 cm) into solid rock.
The Curiosity team wanted to test the drill out on a suitably intriguing target, and "John Klein" seems to qualify. The outcrop is shot through with light-colored mineral veins that were likely deposited by flowing water long ago.
Follow SPACE.com senior writer Mike Wall on Twitter @michaeldwall or SPACE.com @Spacedotcom. We're also on Facebook and Google+.
Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Support HuffPost
Our 2024 Coverage Needs You
Your Loyalty Means The World To Us
At HuffPost, we believe that everyone needs high-quality journalism, but we understand that not everyone can afford to pay for expensive news subscriptions. That is why we are committed to providing deeply reported, carefully fact-checked news that is freely accessible to everyone.
Whether you come to HuffPost for updates on the 2024 presidential race, hard-hitting investigations into critical issues facing our country today, or trending stories that make you laugh, we appreciate you. The truth is, news costs money to produce, and we are proud that we have never put our stories behind an expensive paywall.
Would you join us to help keep our stories free for all? Your contribution of as little as $2 will go a long way.
Can't afford to donate? Support HuffPost by creating a free account and log in while you read.
As Americans head to the polls in 2024, the very future of our country is at stake. At HuffPost, we believe that a free press is critical to creating well-informed voters. That's why our journalism is free for everyone, even though other newsrooms retreat behind expensive paywalls.
Our journalists will continue to cover the twists and turns during this historic presidential election. With your help, we'll bring you hard-hitting investigations, well-researched analysis and timely takes you can't find elsewhere. Reporting in this current political climate is a responsibility we do not take lightly, and we thank you for your support.
Contribute as little as $2 to keep our news free for all.
Can't afford to donate? Support HuffPost by creating a free account and log in while you read.
Dear HuffPost Reader
Thank you for your past contribution to HuffPost. We are sincerely grateful for readers like you who help us ensure that we can keep our journalism free for everyone.
The stakes are high this year, and our 2024 coverage could use continued support. Would you consider becoming a regular HuffPost contributor?
Dear HuffPost Reader
Thank you for your past contribution to HuffPost. We are sincerely grateful for readers like you who help us ensure that we can keep our journalism free for everyone.
The stakes are high this year, and our 2024 coverage could use continued support. If circumstances have changed since you last contributed, we hope you’ll consider contributing to HuffPost once more.
Support HuffPostAlready contributed? Log in to hide these messages.