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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The sky is ready for LRIS-ADC and NIRC2-LGS. Our observers from UCB and NASA are also ready. Sun set 07:11:00pm rise 05:46:00am
Low energy X-ray debate settled. Cool movie, too. 1.usa.gov/1o7kwXF
Keck 1 HIRESR is scheduled with NASA observers. Keck 2 NIRC2-LGS is scheduled for NASA observers. Sun set 07:11:00pm rise 05:46:00am
We are setting up HIRESR on Keck 1 for NASA observers, DEIMOS on Keck 2 for UH observers. Sun set 07:12:00pm rise 05:45:00am
NASA observers will work with HIRESR tonight. And UH observers will work with DEIMOS. Sun set 07:12:00pm rise 05:45:00am