Who will study and fight the effects of deep cosmic radiation? NASA’s decision to rely on private companies like SpaceX to resupply the International Space Station has possibly saved the space agency billions …

They’ll continue to literally broaden our horizon.

But that is precisely why space is best left with NASA. NASA is developing the Space Launch System and the Orion spacecraft for missions to deep space, including to Mars, leaving private companies to send people to low Earth orbit. Space is only an US thing. Who’s going to study the effects on the human anatomy in deep space? Since then Falcon 9 has made moe than a dozen trips to space, delivering satellites to orbit as well as delivering and returning cargo from the space station for NASA.
It’s not an us vs them thing.

A benefit of the entry of the private sector into space exploration has been recognition of the high-tech companies that contribute to the growth of the economy as valuable targets for investment. Who will keep an eye on gene mutations after long stays in space? Had the Webb telescope been a project in a private company, funding would have stopped years ago. During a panel of the Space Frontier Foundation’s NewSpace 2014 conference Saturday in San Jose, California, the spirit of partnership between the public and private sectors in space exploration was on full display.
NASA just awarded six private companies a total of $44 million as part of the agency's "Tipping Point" program. NASA is partnering with eight U.S. companies to advance small spacecraft and launch vehicle technologies that are on the verge of maturation and are likely to … NASA and SpaceX, as well as all other private companies, will continue to work together.