An asteroid is spotted from earth moving in a parabolic path with earth as the focus. When the line from the earth to the asteroid makes an angle of 90 degrees with the axis of the parabola, the asteroid is measured at 60 million miles away. Treat the earth as a point and calculate how close the asteroid will come to earth.

An asteroid is spotted from earth moving in a parabolic path with earth as the focus. When the line from the earth to the asteroid makes an angle of 90 degrees with the axis of the parabola, the asteroid is measured at 60 million miles away. Treat the earth as a point and calculate how close the asteroid will come to earth.