This process is known as exciton fission and means that the solar cell is able to use high energy photons from the blue-green part of the visible spectrum. Baldo says that using tetracene could bump the theoretical energy efficiency limit up to 35 percent—higher than was ever thought possible for single-junction cells.
Earth has dune fields like this too in our deserts—just one more thing we have in common with Mars. This comet run-in was surprising to astronomers because the general thought was that impacts like these didn’t happen in the outer solar system this long after the formation of the solar system.
Jupiter's moon Europa is like the Brigadoon of the solar system: an idyllic moon with an ice-covered ocean that may hide some form of life, even though plans to send a spacecraft there keep receding farther and farther away into the Jovian mists.