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NASA已将2003年的火星发射计划缩减为2个可能的飞行任务,其中包括按1997年利用气袋成功地在火星上着陆的探路者火星漫游车的设计复制的着陆器。另一个任务是轨道器,它将尽可能以2001年火星轨道器的设计为基础进行设计。着陆器将由NASA的喷气推进实验室(JPL)装配,而轨道器在洛克希德·马丁航天中心建造.可望NASA在7月做出决定,选定准备2003年飞行的着陆器或轨道器,也可能这是1999年2次火星98任务失败后的首次飞行。这2次失败以后。空间局决定继续计划之中的2001年火星轨道器,但是取消2001年着陆器的研制。假如没有这2次失败,NASA在此时已将进行2003年的火星样品回送工作,大型着陆器装载采样车和返回舱.返回舱能把样品送人轨道,以后由运输飞船送回地球。
NASA has reduced its 2003 launch plan to two possible missions, including a replica of a rover designed by rovers of Pathfinder rovers that successfully landed on Mars with air bags in 1997. Another task is the Orbiter, which will be designed based on the design of the Mars orbiter in 2001 to the extent possible. The lander, to be assembled by NASA’s Jet Propulsion Laboratory (JPL) and the Orbiter at the Lockheed Martin Space Center, is expected NASA to make a decision in July to select landers or orbiters for 2003 flight, It may also be the first flight since the failure of two Mars 98 missions in 1999. After these two failures. The Space Agency decided to continue planning for the 2001 orbiter, but canceled the development of the 2001 lander. Without these two failures, NASA is now in the process of sending back samples of Mars in 2003, a large lander-loaded sample car and a return capsule that will put the sample on orbit and later be returned to Earth by a spacecraft.