Consider a space station A traveling on a straight worldline. Four smaller spaceships, B, D, E and F, leave this spaceship by igniting their rockets in a north, south, east and west direction at the same time. And by looking out of the observatory deck one can clearly see that all four spaceships increase their distances between the space station in different directions. The chief scientist on the space station has a discussion with juniors about space-time and claims that it is possible that the spaceships B, D, E and F have a completely straight wordline from the moment they took off. Is he right?