2014年11月12日 星期三

Planetary Society is Both For and Against Human Spaceflight

+100 RT @starstryder: RT @SciBry: The highs and lows of the last week remind us why the future must be in robotic, not crewed, space flight.— Emily Lakdawalla (@elakdawalla) November 12, 2014 Keith's note: Looks like the Planetary Society's...



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