if you really think for moment, volcanos are mother natures boobs, also milk had to come from somewhere, even if it comes from giant girls in outer space, that sounds like pretty good idea for a movie
Ok ill say it even if they where doing that softly they just caused massive tidal surges, earthquakes, volcanic eruptions and any any place they impacted would be shattered to the tectonic plate.
And gravity shall rip the Earth so far.