An artist's illustration of what exoplanet PSR J2322-2650b might look like. Because of its extremely tight orbit, the planet’s entire year—the time it takes to go around the pulsar—is just 7.8 hours. (Credit: NASA, ESA, CSA, Ralf Crawford (STScI)) ================================================================ Nothing about this planet makes sense. And that’s both confounding and exciting for astronomers. In A Nutshell * Astronomers discovered a Jupiter-sized planet with an atmosphere unlike anything seen before, dominated by carbon molecules in ratios that defy current planetary formation theories. * The planet orbits a pulsar (a dead star’s ultra-dense core) every 7.8 hours and is blasted with...