| タイトル | Space Studies of the Earth-Moon System, Planets, and Small Bodies of the Solar System (B) Past, Present and Future of Small Body Science and Exploration (B0.4) |
| 本文（外部サイト） | http://hdl.handle.net/2060/20160006678 |
| 著者（英） | Mazanek, Dan; Abell, Paul; Johnson, Lindley; Gates, Michele; Reeves, Dan; Ticker, Ronald; Chodas, Paul |
| 発行日 | 2016-07-30 |
| 言語 | eng |
| 内容記述 | To achieve its long-term goal of sending humans to Mars, the National Aeronautics and Space Administration (NASA) plans to proceed in a series of incrementally more complex human space flight missions. Today, human flight experience extends only to Low- Earth Orbit (LEO), and should problems arise during a mission, the crew can return to Earth in a matter of minutes to hours. The next logical step for human space flight is to gain flight experience in the vicinity of the Moon. These cis-lunar missions provide a "proving ground" for the testing of systems and operations while still accommodating an emergency return path to the Earth that would last only several days. Cis-lunar mission experience will be essential for more ambitious human missions beyond the Earth-Moon system, which will require weeks, months, or even years of transit time. In addition, NASA has been given a Grand Challenge to find all asteroid threats to human populations and know what to do about them. Obtaining knowledge of asteroid physical properties combined with performing technology demonstrations for planetary defense provide much needed information to address the issue of future asteroid impacts on Earth. Hence the combined objectives of human exploration and planetary defense give a rationale for the Asteroid Re-direct Mission (ARM). |
| NASA分類 | Lunar and Planetary Science and Exploration |
| レポートNO | JSC-CN-35713 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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