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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Tonight's schedule is MOSFIRE on Keck 1 and DEIMOS on Keck 2 for our lucky observers from CIT and UCI. Sun set 05:52:00pm rise 06:27:00am
In case you missed the first Cosmic Cup: Keck I beat Keck II, 8 - 3 Credit: Sylvia Hess pic.twitter.com/YSxM7VW28G
The sky is ready for MOSFIRE and DEIMOS. Our observers from CIT and UCI are also ready. Sun set 05:52:00pm rise 06:27:00am
Keck 1 MOSFIRE is scheduled with Subaru observers. Keck 2 DEIMOS is scheduled for UCI observers. Sun set 05:52:00pm rise 06:26:00am
We are setting up MOSFIRE on Keck 1 for Subaru observers, DEIMOS on Keck 2 for UCI observers. Sun set 05:52:00pm rise 06:25:00am