While driving home, we saw several lights that were the size of stars in a straight mostly vertical line. at first there were 8 or 9 lights that were equidistant from each other slowly ascending to a point in the sky. once the top light would reach a certain point it would vanish and another light would appear on the horizon in line. this went on for 4 to 5 minutes until only 4 or 5 remained visible. then the top light kept traveling to open up a large gap between it and the rest. it eventually disappeared and then the rest started to ascend in order again until they all vanished.