03.21.2017 Break in Raised Tread on Curiosity Wheel
02.27.2017 Swirling Dust in Gale Crater, Mars, Sol 1613
02.27.2017 Dust Devil Passes Near Martian Sand Dune
02.27.2017 Sand Moving Under Curiosity, One Day to Next
12.13.2016 Now and Long Ago at Gale Crater, Mars
12.13.2016 Where's Boron? Mars Rover Detects It
10.03.2016 Curiosity Self-Portrait at 'Murray Buttes'
10.03.2016 Butte 'M9a' in 'Murray Buttes' on Mars
09.19.2016 Ribbon Cutting
09.09.2016 Farewell to Murray Buttes (Image 5)
09.09.2016 Farewell to Murray Buttes (Image 4)
09.09.2016 Farewell to Murray Buttes (Image 3)
09.09.2016 Farewell to Murray Buttes (Image 2)
09.09.2016 Farewell to Murray Buttes (Image 1)
08.26.2016 Out-of-this-World Records
03.30.2016 Erisa Hines
03.30.2016 Buzz Aldrin
02.12.2016 Women in Science
02.09.2016 Adam Steltzner, a JPL engineer
01.27.2016 Night Close-up of Martian Sand Grains
01.27.2016 Curiosity Self-Portrait at Martian Sand Dune
12.17.2015 Alteration Effects at Gale and Gusev Craters
12.17.2015 Full-Circle View Near 'Marias Pass' on Mars
12.11.2015 Surface Close-up of a Martian Sand Dune
12.11.2015 Martian Sand Disturbed by Rover Wheel
New WheelsIn this picture, engineers are preparing Curiosity's wheels for installation. Six new wheels were installed onto the rover on June 28 and 29, in the Spacecraft Assembly Facility at NASA's Jet Propulsion Laboratory, Pasadena, Calif., where the rover is being assembled.
These wheels are 50 centimeters (20 inches) in diameter, making them larger than the wheels of a car. Each wheel has its own motor, giving the rover independent six-wheel drive. The rover can swerve and turn in place a full 360 degrees. The suspension system is based on the "rocker-bogie" system, which was used on the Spirit and Opportunity rovers and the earlier Pathfinder missions. This means the rover can roll over large rocks and dips without tipping over. The rover can also climb steep hills, up to 45 degrees. Curiosity's wheels have "cleats," similar to those soccer players have on their shoes, which provide grip and prevent the rover from slipping while going over rocks or climbing up hills of soft sand.
Curiosity is the centerpiece of NASA's Mars Science Laboratory mission, which is expected to launch in late 2011, and touch down wheels-first in summer 2012.
Image Credit: NASA/JPL-Caltech