Pathfinders in Space (conc.)

So, it seems the aliens who built the spaceship they found on the moon actually came from Earth 400 million years ago, but whilst the explorers were on the moon, a nuclear war broke out back on Earth, wiping out their civilisation.  Presumably, the pre-Cambrian explosion was life on Earth recovering from this disaster.

Unfortunately, a meteorite has hit one of the rockets and a lack of supplies means the remaining rocket can only carry back one adult and one child.  However, after it leaves, the scientists realise that the alien spaceship is still operable, the nuclear fuel not having decayed after 400 million years!  They take off and overtake the rocket, but when they try and enter the atmosphere, bits of the spaceship break off, so they can't land.  The rocket comes alongside and rescues them (in some of the most unconvincing film of a space walk I've ever seen - would they really flap their arms around as if they are swimming) and they all land safely,  You'd think the lack of fuel would be more important trying to land than any other part of the journey, but there you are.

Now on to Pathfinders to Mars.