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.

Transcript

Filter

Filter by year OR type:

View all

Twitter

On Keck 1, we have UCSC observers using MOSFIRE. On Keck 2, we have UCSB/UCLA observers using NIRC2-LGS. Sun set 06:51:00pm rise 05:51:00am
UCSC observers will use MOSFIRE on Keck 1, and UCSB/UCLA observers will use NIRC2-LGS on Keck 2 tonight. Sun set 06:51:00pm rise 05:51:00am
BOOM! First Potentially Habitable Earth-Size Planet Confirmed by Keck and Gemini. bit.ly/1pdXHZ9 pic.twitter.com/Yb1oA2MetB
Our guests tonight are observers from UCSC and KECK, using MOSFIRE and NIRC2-LGS/PCS* respectively. Sun set 06:51:00pm rise 05:52:00am