An analysis of the Moon’s gamma-ray brightness performed by Mario Nicola Mazziotta and Francesco Loparco of the National Institute of Nuclear Physics, Bari, Italy, using NASA’s Fermi Gamma-ray Space Telescope’s Large Area Telescope (LAT) instrument revealed that at certain electromagnetic wavelengths the Moon is brighter than the Sun. It’s the result of the interaction of the Moon with cosmic rays so the observations of those gamma rays offer new information on very energetic cosmic events but also on the Moon’s environment. Studying that environment has become more important following the new projects of manned Moon missions.