History of the telescope of the IRAS satellite in 1983 revolutionized infrared astronomy from space. This reflecting telescope which had a mirror, operated for nine months until its supply of coolant (liquid helium) ran out. It surveyed the entire sky detecting 245,000 infrared sources—more than 100 times the number previously known. Although optical telescopes can image the near ultraviolet, the ozone layer in the stratosphere absorbs ultraviolet radiation shorter than 300 nm so most ultra-violet astronomy is conducted with satellites. Ultraviolet telescopes resemble optical telescopes, but conventional aluminium-coated mirrors cannot be used and alternative coatings such as magnesium fluoride or lithium fluoride are used
The Sun Comes Out Tonight The Sun Comes Out Tonight The Sun Comes Out Tonight is the sixth studio album by American industrial rock band Filter. Originally announced as "Gurney and the Burning Books" and intended for independent release in mid-2012, the band would later sign to major record label Wind-up Records, leading to them to delay and rename the release. The album was released on June 4, 2013, with the first single, "What Do You Say" being released on May 7, 2013. Frontman and lead singer Richard Patrick first discussed working on a new music as early as 2011, when he referred to plans