@Cinderella , l wonder what brought that idea up cinders ?? 
I used to love watching Space 1999.
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I don’t imagine its like cricket…or baseball. They don’t just whack an asteroid and let it go wherever it likes. They calculate the trajectory and destination, surely?
Imagine if they whacked it onto another planet teeming with life that we hadn’t taken over and destroyed yet discovered…that would be a bit of an “oopsy” moment 
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You can’t totally predict outcomes since there will be non deterministic chaotic events involved. 
@Donkeyman @Dextrous63 you know much more than me.
Without the moon, many scientists believe Earth’s axis would likely wobble much more than it does now. Too much deviation and the Earth could be “locked into a permanent deep freeze or else heated to dangerous levels.” The stability of Earth’s climate “depends on the presence of the moon which stabilizes its obliquity, and hence the insolation variations on its surface.”
The moon’s effect on Earth’s stability is due in part to two critical factors: its size and orbit. Two basic types of orbit exist: an equatorial orbit, which travels along the line of the planet’s equator, and an ecliptic plane orbit, which lies in the flat plane defined by the planet’s orbit of the sun. The moon’s orbit is unique—most of the other named moons orbit their planets in an equatorial orbit. In contrast, our moon orbits in an ecliptic orbit. In other words, the moon’s orbit is very close to the plane of the ecliptic, not the earth’s equatorial plane.
The planets in our solar system have elliptical-shaped orbits, meaning the orbit’s shape is an ellipse, or “squashed” circle. However, Earth has an orbit shape that is closer to a circle than that of most planets. Earth’s remarkable stability is due to the combination of its large moon and its nearly circular orbit. One of these two traits alone could not produce the stability necessary for life; both are required.
@Cinderella , Very interesting link Cinders ! But what has the dart mission got to
do with it ?? 
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We might have enough time, from anything coming from deep space to prepare, if the moon got damaged by human activity (blown up) could anything survive.
@PixieKnuckles Let me supply a bit of context pixie ?
The human race has existed the equivalent of the flash of an electric spark
when compared to the life of the universe !
So as the great Freddie Mercury said “nothing really matters much to me!”
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