HYDROGEN HUDDLE Scientists produced negatively charged clusters of hydrogen in the lab. Hydrogen molecules made up of two hydrogen atoms (pairs of silver spheres) surround a negatively charged hydrogen ion (red sphere). The molecules arrange into an icosahedron, a shape with 12 vertices.
TIME MACHINE The TARDIS, disguised as a police phone box, is the time machine used by Doctor Who, one of many examples of fictional time travelers described by James Gleick in his book Time Travel.
ANTIMATTER MATCH Scientists with the ALPHA-2 experiment, shown above, found that antimatter and matter versions of hydrogen behave alike. The frequency of light necessary to boost antihydrogen atoms into a higher energy state is the same as that for normal hydrogen atoms.