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 value was 0.01023 °C with an uncertainty of 70 µK". This practice is permissible because the magnitude of the degree Celsius is equal to that of the kelvin. Notwithstanding the official endorsement provided by decision #3 of Resolution 3 of the 13th CGPM, which stated "a temperature interval may also be expressed in degrees Celsius", the practice of simultaneously using both °C and K remains widespread throughout the scientific world as the use of SI-prefixed forms of the degree Celsius (such as "µ°C" or "microdegrees Celsius") to express a temperature interval has not been well-adopted. One effect of defining the