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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Interesting questions... University of Southampton bit.ly/1wFcVnW
Tonight observers from Yale and KECK will use MOSFIRE and NIRC2-LGS. Sun set 06:22:00pm rise 06:48:00am
Excellent find! Great job! Gigantic ring system around J1407b much larger, heavier than Saturn’s : NewsCenter bit.ly/1zVwcbP
MOSFIRE and NIRSPEC are the instruments tonight. Observers are from Subaru and CIT-Y. Sun set 06:21:00pm rise 06:48:00am
The sky is ready for HIRESR and NIRC2-LGS. Our observers from ANU and UCSC are also ready. Sun set 06:20:00pm rise 06:48:00am