And the reason I showed the little arrow there, I think that should say 30 miles, we decided a few months ago to actually fly the spacecraft through the plume of that geyser so we can actually measure the material that it is made of.
我在这里标注了距离， 应该是30英里， 几个月以前我们让航天器 飞越了间歇泉的漂浮物 这样我们就可以实际测量物质组成。