NASA chief says talks between Elon Musk, Vladimir Putin would be 'concerning' NASA Administrator Bill Nelson has expressed concerns over reports that SpaceX chief executive Elon Musk has been in regular contact with Russian President Vladimir Putin. https://cdn.mos.cms.futurecdn.net/tTRbCb6dR4mWaRF9T3Gvs6.jpg https://www.space.com/nasa-chief-bill-nelson-concerned-elon-musk-putin-talks