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 OSIRIS-LGS and NIRC2-NGS. Our observers from UCSB/UCLA and UCLA are also ready. Sun set 06:46:00pm rise 05:57:00am
Keck 1 OSIRIS-LGS is scheduled with UH observers. Keck 2 NIRSPEC is scheduled for UCSD/UCD observers. Sun set 06:47:00pm rise 05:57:00am
We are setting up LRIS-ADC on Keck 1 for NASA/KECK observers, DEIMOS on Keck 2 for UCD observers. Sun set 06:48:00pm rise 05:56:00am
Happy Sunday! One of the clever scientists posted this as the description for their observing run here at Keck. pic.twitter.com/3iSlETZTFr