http://www.sciencemag.org/news/2016/...rstellar-space
..."A new find in deep space may explain one of the biggest mysteries here on Earth. Researchers have spotted the first evidence of a chiral molecule—a molecule with two mirror image “twins”—in interstellar space.
.... The molecule, used on modern-day Earth to make polyethylene plastics, was found in a gas cloud about 28,000 light-years away from our planet. And though it isn’t directly involved in biochemical reactions, it may shed light on how the chiral molecules that ultimately led to life on Earth formed in the first place."...