International Ultraviolet Explorer was considered the most successful astronomical satellite ever. The human eye can perceive light with wavelengths between roughly 350 (violet) and 700 (red) nanometres. Ultraviolet light has wavelengths between roughly 10 nm and 350 nm. UV light can be harmful to human beings, and is strongly absorbed by the ozone layer. This makes it impossible to observe UV emission from astronomical objects from the ground. Many types of object emit copious quantities of UV radiation, though: the hottest and most massive stars in the universe can have surface temperatures high enough that the vast majority of their light is emitted
Song to the Sun Song to the Sun Song to the Sun, known in Japan as , is a movie directed by Norihiro Koizumi starring the Japanese artist and singer Yui. In the movie, she plays the role of Kaoru Amane (雨音 薫 "Amane Kaoru"), a 16-year-old girl who has the rare skin condition xeroderma pigmentosum (XP), a disease that makes the ultraviolet radiation of sunlight potentially lethal to her. Yui's character is partly based on herself, as she is a singer and guitarist, and she performs three of Yui's songs in the movie; "It's Happy Line", "Good-bye Days" and "Skyline". There has been