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Stickney
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Interior of the crater Stickney on Phobos. The light and dark streaks indicate that the satellite is composed of several different materials. This image was taken by the Mars Global Surveyor spacecraft. Phobos Phobos, the inner and larger of the two moons of Mars, in a composite of photographs taken by the Viking 1 orbiter in October 1978 from a distance of about 600 km (370 miles). The most prominent feature is the impact crater Stickney, which is almost half as wide as the moon itself. Also visible are linear grooves that appear to be related to Stickney and chains of small craters.
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Stickney

crater

Learn about this topic in these articles:

features of Phobos

  • Phobos, the inner and larger of the two moons of Mars, in a composite of photographs taken by the Viking 1 orbiter in October 1978 from a distance of about 600 km (370 miles). The most prominent feature is the impact crater Stickney, which is almost half as wide as the moon itself. Also visible are linear grooves that appear to be related to Stickney and chains of small craters.
    In Phobos

    This structure, known as Stickney, measures about 10 km (6 miles) across. Precise observations of Phobos’s position over the past century suggest that tidal forces from Mars are slowly pulling the satellite toward the planet. If such is the case, it will collide with Mars in the very distant…

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  • Mars
    In Mars: Martian moons

    The largest, the crater Stickney, is about half as wide as the satellite itself. Its surface also exhibits a widespread system of linear fractures, or grooves, many of which are geometrically related to Stickney. In contrast, the surface of Deimos appears smooth, as its many craters are almost completely…

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