Europe's Schiaparelli Mars lander crashed last month after a sensor failure caused it to cast away its parachute and turn off braking thrusters more than two miles (3.7 km) above the surface of the planet, as if it had already landed, a new report has revealed.
The error stemmed from a momentary glitch in a device that measured how fast the spacecraft was spinning, the report by the European Space Agency said.
The spacecraft activated its ground systems, even though it was still about 2.3 miles off the surface, the ESA said.
'When merged into the navigation system, the erroneous information generated an estimated altitude that was negative - that is, below ground level,' ESA said.
'This in turn successively triggered a premature release of the parachute ... and a brief firing of the braking thrusters.'
About 0.9 km to the south, the parachute and rear heatshield have also now been imaged in colour. In the time that has elapsed since the last image was taken on 25 October, the outline of the parachute has changed.
The most logical explanation is that it has been shifted in the wind, in this case slightly to the west.
This phenomenon was also observed by MRO in images of the parachute used by NASA's Curiosity rover.
A final report on the crash is likely to be completed next month.