There seemed little for biochemists and xenobiologists to do once it was agreed that Mars held no life and that its early life forms – archebacteria and so forth – had perished many millions of years before mankind appeared on Earth.
The heliopause, with its strange turbulences, was studied. While Mars was regarded as a completely dead world, indications of life on Ganymede, one of the moons of Jupiter already mentioned, were observed by new instruments.