... "left-handed". Many biologically active molecules are chiral, including naturally occurring sugars and amino acids (...the universe, could theoretically have opposite chirality. Nonetheless, chiral molecules have intriguingly been found in meteorites...
... on Philae should have been able even to derive the chirality of amino acids, had it gotten some soil samples, which...Early results On Earth, all amino acids have a left handed chirality and it would have been very interesting to know if comets agree...