• Astrobiodefense is the defense against biological threats in space and on Earth that result from space exploration. It represents the next frontier — another form of preparedness as we move toward the middle half of the 21st century. There are two goals: to prevent the contamination of extraterrestrial environments with Earth organisms; and to prevent extraterrestrial or mutated terrestrial microbes from harming Earth's inhabitants. As fantastical as it may sound, astrobiodefense is neither hypothetical nor fictional. It is a real challenge that requires urgent attention and action.

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