Just the raw materials of the solar system.....other than that....nothing.
"When politicians say a "private" space company, what they really mean is private contractors funded by government instead of giving the money directly to NASA."
Which would be far cheaper than giving the money directly to NASA.
"Its not free market capitalism by any measure."
"Free market capitalism" has never existed, and likely WILL never exist, anywhere. But what Newt is proposing is exactly what the US (and the colonies before them, and the Brits even before that) have done forever....provide the "seed money" to get a risky venture up and going. See....Erie Canal...intercontinental railroads.....establishment of air transport (contracts to "carry the mail")....and on and on. It has worked, and will work. Being a historian, Gingrich knows this.
You are rationalizing big government Republicanism just like your types did in the Bush days.
It doesn't matter anyway, in my opinion there will be a near total collapse of the economy within 5 years because neither side will let go of big government.
When the stores don't have food and gasoline is $100+ a gallon maybe you'll change your mind on the worthiness of wasting money on space circuses.