02.08.2017 Mars Reconnaissance Orbiter Observes Changes
01.26.2017 Mono Lake
01.25.2017 'Wing' Dike of Hardened Lava in New Mexico
01.25.2017 Blade-Like Martian Walls Outline Polygons
01.23.2017 Spirit And Opportunity By The Numbers
01.10.2017 Mars 2020 Rover - Artist's Concept
01.06.2017 Earth and Its Moon, as Seen From Mars
12.13.2016 Now and Long Ago at Gale Crater, Mars
12.13.2016 Where's Boron? Mars Rover Detects It
11.15.2016 Schiaparelli Impact Site on Mars, Stereo
11.03.2016 Schiaparelli Impact Site on Mars, in Color
10.17.2016 MAVEN Captures Rapid Cloud Formation
10.17.2016 Mars' Nightside Atmosphere
10.17.2016 Ultraviolet Image Near Mars' South Pole
10.17.2016 Ultraviolet Mars Reveals Cloud Formation
10.05.2016 Dust Haze Hiding the Martian Surface in 2001
10.04.2016 Test of Lander Vision System for Mars 2020
10.03.2016 A Sharpened Ultraviolet View of Mars
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
08.04.2016 Mars Rover Is New Social Media Game
08.04.2016 Mars Rover Social Media Game
08.02.2016 Artist Concept for RIMFAX
07.20.2016 Viking 40 Year Anniversary Artwork: Medal
07.18.2016 Mars 2020 Range Trigger
07.14.2016 NASA to Launch Mars Rover in 2020
Memorial Image Taken on Mars on Sept. 11, 2011This view of an American flag on metal recovered from the site of the World Trade Center towers shortly after their destruction on Sept. 11, 2001, was taken on Mars on Sept. 11, 2011, the 10th anniversary of the attacks on the towers. The aluminum component bearing the image of the flag serves as the cable guard of a tool on NASA's Mars Exploration Rover Opportunity. Two cameras on Opportunity recorded exposures during the rover's 2,713th Martian day that were combined into this view.
The cable guard made of metal from the World Trade Center is on Opportunity's rock abrasion tool, which was built and is operated by Honeybee Robotics, New York.
The color portion of the image combines three exposures taken through different filters by Opportunity's panoramic camera to yield approximate true color as the human eye would see it on Mars. The black-and-white portion of the view, providing context, comes from Opportunity's navigation camera.
Opportunity completed its three-month prime mission on Mars in April 2004 and has worked for more than seven years since then in bonus extended missions.
NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Exploration Rover Project for the NASA Science Mission Directorate, Washington.
Image Credit: NASA/JPL-Caltech