Space | smithsonianmag.comhttps://www.smithsonianmag.com/rss/space/RSS feed for SpaceenThu, 28 Jul 2016 19:56:36 +0000Must the Molecules of Life Always be Left-Handed or Right-Handed?https://www.smithsonianmag.com/space/must-all-molecules-life-be-left-handed-or-right-handed-180959956/They are on Earth, but life on other planets could play by different rulesThu, 28 Jul 2016 19:56:36 +0000