In an era of tight budgets, all spending decisions are de facto questions of political and moral priorities. (newscientist.com)
In an era of tight budgets, rotators represent a hidden tax on NSF's bottom line. (sciencemag.org)
But mission architects must keep in mind that focusing too much on intermediate destinations could significantly delay or doom a manned Mars effort, especially in this era of tight budgets, Thronson said. (space.com)