The safest approach might be to test several techniques on nearby asteroids before using them against Apophis when it approaches Earth. Unfortunately, it is estimated that “attacking” an asteroid would cost billions of dollars, especially since multiple space launches would likely be needed to ensure that the required number of probes could complete the mission.
最稳妥的办法也许是，先拿地球附近的其他小行星来做实验，测试几种技术的可行性，然后再用来对付阿波菲斯。可惜，据估计，攻击一颗小行星动 辄 要耗费几十亿美元，若要保证万无一失，得搞好几次实验呢。