7 thoughts on “October 25, 2018

  1. A cannon of that size could not possibly disrupt Phobos. I don’t know what would happen with an antimatter projectile, but even if it was broken, it would reform fairly quickly, so long as it is outside of the Roche limit.
    Phobos is currently 9,380 km. The Roche limit is 3,620 km.
    But since it rotates backward, it will eventually happen. 70 million years if it is a solid piece of rock.
    sooner if loose.

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