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 Secret Saturdays: Beasts of the 5th Sun 4 suns already and we live under a 5th sun or as he calls it the "Sun of the 8 Beasts". According to the Aztecs there will never be a sixth sun and closes with "Are you afraid of the dark NOW." Mere moments later, the Screens flash intruder alert and Drew tells Zak to stay but Doc asks that he helps check out the place. Using Cryptids that had broken into the facility specifically a Cafre and Fiskerton to fight off some of Argost's minion's. Shortly thereafter Zak fights a Kingstie as a mini boss followed by Van Rook