Christer Fuglesang in recognition of Anders Celsius, the Swedish 18th century astronomer who invented the Celsius temperature scale. Total EVA time during STS-116: 18 hours and 15 minutes. Fuglesang, once a Swedish national Frisbee champion, held the national title in "maximum time aloft" in 1978, and subsequently competed in the 1981 World Frisbee Championship. Fuglesang took one of his personal frisbees to the International Space Station. On Dec 15 in 2006, he set a new "world record" for Time Aloft by freefloating a spinning frisbee for 20 seconds in the microgravity environment of the ISS. It was done during a live broadcast
Celsius formally adopted "degree Celsius" in 1948, formally keeping the recognized degree symbol, rather than adopting the gradian/centesimal degree symbol. For scientific use, "Celsius" is the term usually used, with "centigrade" remaining in common but decreasing use, especially in informal contexts in English-speaking countries. It was not until February 1985 that the weather forecasts issued by the BBC switched from "centigrade" to "Celsius". Some key temperatures relating the Celsius scale to other temperature scales are shown in the table below. The "degree Celsius" has been the only SI unit whose full unit name contains an uppercase letter since the SI base