No asteroid target has yet been selected, making planning difficult.
via LiveScience.com http://www.livescience.com/26875-nasa-asteroid-mars-manned-missions.html
via LiveScience.com http://www.livescience.com/26875-nasa-asteroid-mars-manned-missions.html
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου