美能使火星观察器在1990年飞向火星吗? 美航宇局原预计1990年发射美国无线电公司造的“火星观察器”,此是发射的最佳时间,但现在又声称1990年因要发射太阳极轨道探测器,故使火星观察器推迟到1992年发射。而该局又说:推迟是因“预算”,而不是火箭压力问题。发射太阳极轨道探测器采用一次性火箭,有许多有效载荷要在1990年发射,特别 Will the United States enable the Mars Observatory to fly to Mars in 1990? NASA originally anticipated the launch of the “Mars Observer” by the U.S. Radio Company in 1990, which is the best time to launch, but now claims to launch again in 1990 Solar orbit detector, the Mars Observer was postponed until 1992 launch. The bureau added: Delays are due to “budget” rather than rocket stress. The launch of the polar orbit detector uses a disposable rockets, many payloads to be launched in 1990, especially