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
Why Does the Sun Shine? (The Sun Is a Mass of Incandescent Gas) Zaret from Tom Glazer's 1959 album, "Space Songs". The lyrics for the refrain appear verbatim in the 1951 Golden Guide "Stars". They Might Be Giants re-arranged the song in an uptempo version for their 1998 live album, "Severe Tire Damage", and their 2009 children's album, "Here Comes Science", on which they added the self-penned "Why Does The Sun Really Shine? (The Sun is a Miasma of Incandescent Plasma)", which corrects several factual inaccuracies in the original song. It was also included on the soundtrack to the children's game show "". The second track, "Jessica", was originally recorded by The Allman