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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On Keck 1, we have CIT observers using LRIS-ADC. On Keck 2, we have Yale observers using DEIMOS. Sun set 06:29:00pm rise 06:01:00am
CIT observers will use LRIS-ADC on Keck 1, and UCD/UCSC observers will use DEIMOS on Keck 2 tonight. Sun set 06:30:00pm rise 06:01:00am
Our guests tonight are observers from CIT and ANU, using LRIS-ADC and DEIMOS respectively. Sun set 06:31:00pm rise 06:00:00am
Aloha Friday! This is from Bo Bleckel shot from Maine. Where's your shot of the night sky? pic.twitter.com/xyj3SP1j3J