Is it likely that scientist can live outside of Earth for

along period of time, with only sustaining themselves wtih

oxygenfrom plants in which they carried with them to the

outerjourney?

It is likely that scientist can live outside the earth but not for a long time. They can sustain themselves with oxygen from plant, but not for long. The planet outside the earth is harsh, and not favourable to human and plant. The only way they can survive is to grow the plants In a controlled environment.