Sean Raymond is an American astrophysicist. He studies the formation and evolution of planetary systems. In his research he asks questions like: Where did Earth’s water come from? Which extra-solar planetary systems are the best for life? Can moons have their own moons? Why does our Solar System appear to be different than planetary systems around other stars? As a science fiction-loving astronomer, he enjoys blending imagination with science. On his blog - planetplanet.net - he sometimes create his own planetary systems. Sometimes he evaluate the scientific validity of well-known settings from movies or books (such as Pandora, Arrakis, and more). And sometimes he tries to figure out what it would feel like on a different planet, for example by understanding the day-night cycles in multi-star systems or by getting a feel for the climates of exotic worlds. He also describes the ways that planets are destroyed, based on his own research and sometimes break out Dr Seuss-style astronomy poems. He also just published a book of astronomy poems.