Pluto and Other Dwarf Planets: Discoveries in our Solar System – Dr. Michael Brown

(March 27, 2007) From the “Evenings with Astronomers” series. In 2005, Dr. Michael Brown and his colleagues discovered 2003 UB313, now officially known as “Eris.” The discovery marked the first time in 75 years that an object larger than Pluto had been found in our Solar System. The discovery turned the astronomical world on its head. Scientists had to consider if size was the only metric by which to define a planet. The debate unleashed an avalanche of questions concerning planetary science and the role scientists play in defining the word “planet” for local and global communities.

Science Standards: Earth in the Solar System; Forces that Shape the Earth; Scientific Views of the Universe.

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Tonight's schedule is MOSFIRE on Keck 1 and DEIMOS on Keck 2 for our lucky observers from CIT and CIT. Sun set 07:06:00pm rise 05:32:00am
The sky is ready for MOSFIRE and DEIMOS. Our observers from CIT and CIT are also ready. Sun set 07:05:00pm rise 05:32:00am
Keck 1 LRIS-ADC is scheduled with CIT observers. Keck 2 NIRSPEC is scheduled for CIT observers. Sun set 07:05:00pm rise 05:33:00am
We are setting up LRIS-ADC on Keck 1 for CIT observers, DEIMOS on Keck 2 for CIT observers. Sun set 07:04:00pm rise 05:33:00am
NASA observers will work with LRISP-ADC tonight. And CIT observers will work with DEIMOS. Sun set 07:04:00pm rise 05:33:00am