Not sure what you mean by this. NASA oversees contracts with the private sector already; the private sector builds, launches, and operates satellites with government oversight, supervision and facilities.
Just handing it over to the "private sector" will produce nothing unless they are funded. Much of what NASA does benefits mankind; who in the private sector has the resources for space research?
We are all witnesses to the end of space exploration. The government has too many obligations for interest payments on borrowed money, entitlement programs, supporting the UN, and irresponsible wars. Countries that we want to emulate like Cuba and Kenya have no space programs.
The same kind of people who donate privately to medical research and universities, totaling billions of dollars annually.
There are millions of people who would step up to fund space research, just as there are millions more who would (and do) fund charity.
Especially if the bloated federal government ever gets out of the way and lets American citizens prosper enough to help each other, instead of relying on a failed socialist bureacracy to do everything for us in return for our votes.....including entertaining us occasionally with cool photos from space.
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Do the names Gates or Buffet mean anything to you?
Much of what NASA does benefits mankind; who in the private sector has the resources for space research?