Phobos in Transit
Mars has two small, asteroid-sized moons named Phobos and Deimos.
A series of daily drives has taken NASA's Mars Rover Curiosity to a vantage point about halfway to a science destination area called Glenelg. The rover has been using its Mast Camera to examine the area ahead and also to catch special occasions when the Martian moons Phobos and Deimos pass in front of the sun from the rover's point of view.

  • This map shows the route driven by NASA's Mars rover Curiosity through the 43rd Martian day, or sol, of the rover's mission on Mars (Sept. 19, 2012).

    This map shows the route driven by NASA's Mars rover Curiosity through the 43rd Martian day, or sol, of the rover's mission on Mars (Sept. 19, 2012).

    The route starts where the rover touched down, a site subsequently named Bradbury Landing. The line extending toward the right (eastward) from Bradbury Landing is the rover's path. Numbering of the...

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  • This mosaic from the Mast Camera on NASA's Curiosity rover shows the view looking toward the "Glenelg" area, where three different terrain types come together.

    This mosaic from the Mast Camera on NASA's Curiosity rover shows the view looking toward the "Glenelg" area, where three different terrain types come together. All three types are observed from orbit with the High-Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. By driving there, Curiosity will be able...

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  • This mosaic from the Mast Camera on NASA's Curiosity rover shows a close-up view looking toward the "Glenelg" area, where three different terrain types come together.

    This mosaic from the Mast Camera on NASA's Curiosity rover shows a close-up view looking toward the "Glenelg" area, where three different terrain types come together. All three types are observed from orbit with the High-Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. By driving there, Curiosity will...

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  • As part of a multi-mission campaign, NASA's Curiosity rover is observing Martian moon transits, the first of which involved the moon Phobos grazing the sun's disk.

    As part of a multi-mission campaign, NASA's Curiosity rover is observing Martian moon transits, the first of which involved the moon Phobos grazing the sun's disk. The event was observed on Martian day, or sol, 37 (September 13, 2012) using Curiosity's Mast Camera, or Mastcam, equipped with special filters for directly observing the sun. This...

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  • Mars has two small, asteroid-sized moons named Phobos and Deimos.

    Mars has two small, asteroid-sized moons named Phobos and Deimos. From the point of view of the rover, located near the equator of Mars, these moons occasionally pass in front of, or "transit," the disk of the sun. These transit events are the Martian equivalent of partial solar eclipses on Earth because the outline of the moons does not...

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  • Mars has two small, asteroid-sized moons named Phobos and Deimos.

    Mars has two small, asteroid-sized moons named Phobos and Deimos. From the point of view of the rover, located near the equator of Mars, these moons occasionally pass in front of, or "transit," the disk of the sun. These transit events are the Martian equivalent of partial solar eclipses on Earth because the outline of the moons does not...

    more

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