so one of them comes near enough to earth to do this redirect experiment. otherwise, you waste a lot of energy going so far out in the solar system. yeah, good. this is it. the next one, we ll see what that is. the dark mission. this is what they found. they identified this. and why are you so appreciative of what they found here as a model for this experiment? that s a great question. if you try to deflect a random asteroid. there s so many things that affect the asteroid. soiler heating on one side. you think of the earth and the moon, this is a binary asteroid. there s a big one and a little one. we have the orbital parameters