Draft Plan Scales Back NASA's Mars Agenda

摘要

ASA has developed a draft Mars exploration plan that entails sending a single robotic mission to the red planet every couple of years, a downsizing of previous ambitions that must still be approved by top agency officials. But while the plans for scouring Mars with orbiters and landers have been scaled back significantly since the agency made exploration of the Moon a major focus, NASA still intends to spend in excess of $600 million a year exploring the fourth planet from the Sun.