据国外媒体报道,一颗正向火星疾驶而去的彗星,将会把美国宇航局的3艘轨道飞行器置于危险境地。该局目前正在采取措施保护它的火星轨道器,同时还要保留继续收集宝贵科学数据的机会,因为编号为C/2013A1的赛丁泉彗星将在10月19日近距离飞越火星。虽然这颗彗星自己并不会对轨道飞行器造成任何威胁,但是在它的尾迹里高速飞行的碎片将会给任何进入彗尾区域的飞船带来巨大问题。这颗彗星的彗核将会从相距火星13.2万千米处飞过,从它上面脱落的碎片将会以大约每秒56千米的相对速度向 According to foreign media reports, a comet that is moving toward Mars will put the three orbiting vehicles of NASA at risk. The agency is currently taking steps to protect its Mars orbiter while retaining the opportunity to continue collecting valuable scientific data as comet Starring Cingulate C / 2013A1 will fly Mars at close range on 19 October. Although the comet itself will not pose any threat to orbital aircraft, the high-flying debris in its wake will pose a huge problem for any spacecraft entering the tail area. The comet’s comet will fly over 132,000 meters from Mars, and debris falling off of it will travel at a relative velocity of 56 kilometers per second