Space News: LONG BEACH, Calif. — Democratic presidential candidate Hillary Clinton says she supports plans to send humans to Mars, a central theme of the current administration’s civil space policy. In a response to a questionnaire on science policy topics released Sept. 13 by ScienceDebate.org that represent some of her most detailed space policy comments to date, Clinton said she would build upon the progress made by NASA in space science, technology and exploration. “Today, thanks to a series of successful American robotic explorers, we know more about the Red Planet than ever before,” she said in response to a question about what the nation’s space goals should be. “A goal of my administration will be to expand this knowledge even further and advance our ability to make human exploration of Mars a reality.” Human missions to Mars became a formal long-term goal of NASA’s human spaceflight program in 2010, when President Obama gave NASA the goal of sending humans to orbit Mars in the mid-2030s, to be followed by humans landing on the planet. NASA has since made the “Journey to Mars” the central theme of its space exploration efforts, including everything from research on the International Space Station to its ...