He also kept a Certina watch that was specially made for his character.
Their faces are stained by the hue of a green oxygenated liquid which is believed to cushion their lungs against the extreme acceleration of interstellar flight; this liquid is contained in their space helmets.
The pair has three sons as a result of their marriage.
Due to the series being shown out of production order, their omission was not overly noticeable.