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
What If God Were the Sun? What If God Were the Sun? What If God Were the Sun? is a 2007 American television film directed by Stephen Tolkin and starring Lacey Chabert and Gena Rowlands. Written by Janet Dulin Jones and Jamie Pachino, based in part on a novel by John Edward, the film is about a dedicated nurse whose life is disrupted by her father's death. After losing her job, she finds comfort and inspiration in caring for a terminally ill woman with a quick wit and strong faith. "What If God Were the Sun?" was originally broadcast by Lifetime Television on May 14, 2007.