Human flights to Mars still at least 15 years off: ESA head

DARMSTADT, Germany (Reuters) - Dreaming of a trip to Mars? You'll have to wait at least 15 years for the technology to be developed, the head of the European Space Agency (ESA) said, putting doubt on claims that the journey could happen sooner.

from Reuters: Science News http://ift.tt/28NrcwR
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