2 Astronomy questions about the earth's core and moon?

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Connor O

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1. How long will the core keep spinning?
2. The moon moves inch every year, the question is that is it coming closer to us or is it moving away from us?
 
1)core will keep spinning if the fluid of the outer core still spinning because this fluid make the core spinning and created fluid dynamic 101 --

2) It now moving away from Earth inch(or more than that i think) every year. Moon revolve around us because that our planet gravitational force has an action on it and it make up a tidal locking(mostly happen with satellite and it always face to the planet only one side) and a motion of the moon revolve around is circle motion or you can called it centrifugal force(Fc=mv^2/R) and if I not remember it wrong 15 billion years about that (theoretically) after this there will be no more moon and Earth not going to be a very nice place to live anymore because Earth need moon. Actually if there is no moon our planet rotation rate going to be faster than 1666.67km/hr. Day and night time going to be short, and evolution of every species on Earth not going to happen. But like what I said another 15million year. It's not in our life time. So don't worry about that much and before the moon going to drift out from our orbit. Asteroids going to hit us already between 3755-3795 about that, and global warming too. --
 
The core will keep spinnig till the earth is destroyed.The moon is going away from us.
 
Let me put it this way.
Mars' core used to be a spinning, liquid dynamo creating a strong magnetic field. Now it's not a liquid, a dynamo, nor creating a magnetic field. The loss of its magnetic field resulted in an increased influx of solar radiation that played a major role in the destruction of Mars' formerly thick atmosphere leaving only the current thin shell that is but a wisp of its past self. This will one day happen to Earth.
 
"...1. How long will the core keep spinning?..."

Because it's a part of Earth, the core will "spin" as long as the Earth does.

"...2. The moon moves inch every year, the question is that is it coming closer to us or is it moving away from us?..."

Away from us at a rate of 3.8 cm per year.
 
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