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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Keck 1 HIRESR is scheduled with NASA observers. Keck 2 NIRSPEC/NIRC2-NGS is scheduled for NASA observers. Sun set 07:08:00pm rise 05:48:00am
We are setting up HIRESR on Keck 1 for CIT observers, NIRSPEC/NIRC2-NGS on Keck 2 for NASA observers. Sun set 07:09:00pm rise 05:48:00am
UCB observers will work with HIRESR tonight. And NASA/UCSD observers will work with NIRSPEC/NIRC2-NGS. Sun set 07:09:00pm rise 05:47:00am
Congratulations Andrea Ghez @UCLA and #GalacticCenter team! Love, W. M. Keck Observatory bit.ly/1DWqDI0
SCIENCE NEWS: Astronomers @keckobservatory & @NASA_Hubble use microlensing to find Uranus-sizd #exoplanet bit.ly/1DcPixb