DNA, the code of life. The full chemical name: Deoxyribose Nucleic Acid. Note that central to this molecule is a particular sugar, Ribose. (You can always tell a chemical that ends in “ose” is a sugar of some kind: fructose, glucose, sucrose). Ribose is similar to glucose in total carbon, oxygen and carbon atoms, but has a different configuration. It makes up the backbone of the DNA molecule, so is essential for life. Astrochemists have now discovered Ribose in meteorites! That means space has at least some of the building blocks of life. Does this mean that the chemicals for life came from extra terrestrial sources?