As the exciting quest to discover smaller and smaller exoplanets trundles on, over 1,000 of these alien worlds have been discovered to date. But as our instrumentation becomes more advanced and techniques more sophisticated, will we ever be able to spot the hypothetical moons in orbit around those exoplanets? Today, the answer appears to be "YES!" But like all science on the raggedy edge of discovery, more study is needed before a definitive discovery can be confirmed.
Frustratingly, the very nature of the technique used to discover this exomoon candidate prevents any further study of this interesting object.
PHOTOS: Exquisite Exoplanetary Art
Exomoons are the natural satellites that are thought to orbit planets orbiting other stars. It stands to reason that, although our rich and diverse solar system may not be a "typical" star system, other planets in other planetary systems should possess natural satellites like most planets in our solar system do.
Hunting exoplanets is hard, but how would astronomers go about hunting exomoons in orbit around those already-hard-to-find exoplanets? It sounds like a near-impossible task, but it's a task that is slowly becoming more plausible.