A vegan diet takes care of most of what we need to do. But you'll also want to minimize the use of oils generally because while olive oil and other vegetable oils are better for your heart than chicken fat they are as fattening as animal fats.
Should we find a second form of life right here on our doorstep we could be confident that life is a truly cosmic phenomenon. If so there may well be sentient beings somewhere in the galaxy wondering as do we if they are not alone in the universe.
