Actually, mankind must be content with the knowledge that we haven't drilled into the Earth's mantle yet; we're still poking around in the crust. I believe the current record is about 12.3 km depth in the Al-Shaheen field in Qatar - the depth to an oil reservoir. 12.3 km is MUCH deeper than any current geothermal well and still within the Earth's crust.
Granted, the base of the crust may be as shallow as ~7-10 km (oceanic crust), and we certainly have samples of mantle material (e.g. kimberlites and other volcanoes - though often with crustal contamination), we just haven't haven't drilled down through the transition from crust to upper mantle yet.
As a complete side note, if you ever get a chance to handle and iron meteorite you're actually holding a piece of the core of a small planet that was destroyed.
It is unlikely that Governor Tarkin played any role in its destruction.
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Actually, mankind must be content with the knowledge that we haven't drilled into the Earth's mantle yet; we're still poking around in the crust. I believe the current record is about 12.3 km depth in the Al-Shaheen field in Qatar - the depth to an oil reservoir. 12.3 km is MUCH deeper than any current geothermal well and still within the Earth's crust.
Granted, the base of the crust may be as shallow as ~7-10 km (oceanic crust), and we certainly have samples of mantle material (e.g. kimberlites and other volcanoes - though often with crustal contamination), we just haven't haven't drilled down through the transition from crust to upper mantle yet.
As a complete side note, if you ever get a chance to handle and iron meteorite you're actually holding a piece of the core of a small planet that was destroyed.
It is unlikely that Governor Tarkin played any role in its destruction.