First, we will construct some of the coordinates in both the asteroid frame and the spacecraft frame. The coordinates for the asteroid frame are given by x, y, z, and t whereas those for the spacecraft frame are given by x′, y′, z′, and t′, respectively. Set the time that the front of the first spacecraft enters the asteroid to be t=t′=0. Also, let the asteroid tunnel be oriented in the x direction so that throughout this problem z=z′ and y=y′ and we can ignore these coordinates. If the spacecraft are traveling at 90% the speed of light, what is the total length L of the three-spacecraft team as observed from the asteroid? Express your answer in meters to three significant figures.