Mars rover Curiosity celebrates fourth anniversary

Four years on Mars have brought evidence the planet could have once supported life

Today marks the fourth anniversary of NASA's rover Curiosity landing on the Red Planet and beginning its work to investigate Mars' history of habitability.

The last four years have been ones of great exploration, scientific and engineering achievements, and... well.... curiosity.

"Recently, NASA gave Curiosity the best anniversary gift it could hope for -- an extension of its mission for at least two more years," said Ashwin Vasavada, Curiosity project scientist for NASA, in a posted video. "We'll use it to reach progressively higher and younger rocks on Mount Sharp, including rock types we've not yet explored. We can't wait to see how the story of the ancient habitability of Mars continues to unfold."

Curiosity, NASA's nuclear-powered, SUV-sized super rover with the widest array of scientific instruments to yet work on another planet, landed on Mars during the evening (Pacific Time) of Aug. 5, 2012.

That landing, which had scientists around the world holding their collective breath, was the beginning of a great voyage for this robotic machine.

Curiosity has been tasked with finding evidence that Mars was ever -- in its history -- able to support life, even in microbial form.

Less than two months into the beginning of its mission, Curiosity found a piece of key evidence -- water .

The rover sent back evidence that there had been what scientists call "vigorous" ancient water flows on the surface of Mars.

That was just the beginning.

The next year, Curiosity found evidence that there is water in the Martian soil. That's encouraging both from a historical perspective and for the fact that it might one day help humans to live and work on Mars.

Astronauts would not be able to carry all the water they would need with them on the journey from Earth, so they would need to be able to source water right there on Mars. Finding water in the soil would help them do just that.

Just last year, Curiosity discovered that Mars holds another key element for life -- nitrogen.

Scientists said the nitrogen could have found its way to Mars by being carried on meteorites or lightning.

With the data being sent back from Curiosity, scientists now know that at least some Martian rocks contain sulfur, nitrogen, hydrogen, oxygen, phosphorus and carbon -- all key chemical ingredients for life, be it microbial or bacterial or another form.

Of course, the robotic rover has had its challenges as well.

Just this summer, for instance, Curiosity put itself into safe mode because it suffered a software glitch. NASA engineers, though, quickly resumed communications with Curiosity and got the rover back to work by sidestepping use of the glitchy software.

"Our rover operations team has hit its stride," Vasavada said in the video. "It used to take a month to drill and analyze a rock sample. Now it takes just a week."

He added that despite "expected wear and tear" on Curiosity's wheels, they continue to function and are expected, with careful driving, to enable the rover to cover all the ground it needs to during its mission.

Just last month, NASA announced that Curiosity now is using an artificial intelligence system that allows the machine to pick out targets -- without human intervention -- to photograph and hit with its laser.

Curiosity now is "frequently" choosing multiple targets every week on its own.

With Curiosity's long-term success already assured, NASA engineers now are working on building their next robotic Mars rover.

The next rover, scheduled to launch in the summer of 2020 and land on Mars in February 2021, has the goal of going the next step. While Curiosity is searching for proof that Mars could have supported life in its history, the next rover will search for evidence of that ancient life.

Join the PC World newsletter!

Error: Please check your email address.

Tags space

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Sharon Gaudin

Computerworld (US)
Show Comments

Essentials

Lexar® JumpDrive® S57 USB 3.0 flash drive

Learn more >

Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop

Learn more >

Mobile

Lexar® JumpDrive® S45 USB 3.0 flash drive 

Learn more >

Exec

Lexar® JumpDrive® C20c USB Type-C flash drive 

Learn more >

Audio-Technica ATH-ANC70 Noise Cancelling Headphones

Learn more >

HD Pan/Tilt Wi-Fi Camera with Night Vision NC450

Learn more >

Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards 

Learn more >

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest News Articles

Resources

PCW Evaluation Team

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Aysha Strobbe

Windows 10 / HP Spectre x360

Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!

Mark Escubio

Windows 10 / Lenovo Yoga 910

For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?