Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Topography and gravity maps of Mars. Animated rotating Mars globes showing surface elevation (left) and free-air gravity variation (right). The elevation map was created using data from the Mars Global Surveyor spacecraft's Mars Orbiter Laser Altimeter (MOLA) and is colour-coded with lowlands in blue and highlands in red and white. Irregularities in the surface and sub-surface of Mars produce variations in the gravitational field, which affect the velocity and altitude of orbiting spacecraft. The free-air gravity map was created by studying small variations in the orbits of Mars Global Surveyor, Mars Odyssey, and Mars Reconnaissance Orbiter spacecraft.

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Topography and gravity maps of Mars

K005/6262 Rights Managed

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Duration: 00:00:19.28

Frame size: 1920x1080

Frame rate: 30

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 503.8M

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Capture format: QuickTime Animation

Codec: H.264

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