Wayt Gibbs broke news in Science last month, not once but twice. In the first story, Wayt (@WaytGibbs) reports that an alien intruder—the comet 21/Borisov—indicates to scientists that at any given moment, we may have many similar interstellar visitors. The second story reports on a new form of carbon, discovered by “happy accident.” The super substance is hard, lightweight, conductive, magnet, and nontoxic. image: NASA, ESA, D. Jewitt (UCLA) et al.