We've been watching the dramatic New Horizons flyby of Pluto over the past few weeks, and many people are saying, "Come on, REALLY. That's a PLANET!"
After being officially discovered by Clyde Tombaugh in 1930, Pluto spent close to a century being thought of as the ninth planet of our Solar System. In 2006, it wasreclassified as a “dwarf planet”due to the discovery of other Trans-Neptunian Objects (TNOs) of comparable size. However, ...
In 1930, a Kansas farm boy, Clyde Tombaugh, hired by Lowell Observatory discovered Pluto and for 76 years there were 9 planets. In the year 2006, the International Astronomical Union (IAU) took up a debate using a “democratic process” to accept a new definition of planet, define a new ...
Without her there might never have been a New Horizons. We then follow the building of the spacecraft, its launch on 19 January 2006 and its journey to Pluto. The book discusses the precarious and precise nature of the Jupiter fly-by and gravity assist, and describes how through “pure...
So if I want to do a project for the science fair I need to list that Pluto isn’t a plant but a dwarf plant and never the less I need to explain why it is no longer a planet as of 2009 but was said to be a planet in 1930 so that Pluto was a planet for only 79 years An...