Canson 3 x 5 sketchbook
Friday, August 22, 2008
Wednesday, August 20, 2008
Tuesday, August 19, 2008
Sunday, August 17, 2008
Saturday, August 16, 2008
Completed a fun book today. Is Pluto A Planet?, by David Weintraub
Pluto was recently demoted from its previous status as a planet to a Plutino following the recent discoveries of numerous Kuiper Belt Objects (KPO) and Scattered Disc Objects (SDO). While the debate continues and may be reopened to further discussion, David Weintraub, a Professor of Astronomy at Vanderbilt University, has written a fairly short and easy to read history of discovery of the objects in our solar system. That history includes the various ways in which science has classified those objects.
What were considered planets has varied through history. Weintraub continues the survey by discussing various means in which to define what a planet is or should be. In the process he takes a look at other bodies that fall on the edges of definition. These include brown dwarfs, pulsar planets, orphaned planets, and free roving planets that seemed to have formed not in stellar discs but out of material insufficient to create enough mass to ignite and form interior nuclear reaction to burn as a star. None of the definitions Weintraub proposes are satisfactory to solving the question, reasons Weintraub. As a science nerd they do not satisfy me either.
Weintraub concludes that Pluto should be reclassified once again a planet as well as reclassifying other objects as planets as well, including recently discovered 2003 UB213, 2002 AW197, 2002 TC302, 2003 EL61, 2005 FY9, Sedna, Orcus, Quanoar, Ixion, Varuna, Cybele, Hygeia, Vesta, Palla, and Ceres. Granted, he concludes, that they are also parts of object types such as Ceres would be a planet and also a large member of the asteroid belt, Quanoar, Sedna are planets and Kuiper Belt Objects. Pluto is a planet and the premier Plutino.
If you want to know why he concludes such, you have to read the book. I happily agree that the solar system contains more than the currently recognized 8 planets. Good book.
Thursday, August 14, 2008
Tuesday, August 12, 2008
Monday, August 11, 2008
Sunday, August 10, 2008
Saturday, August 09, 2008
Friday, August 08, 2008
Thursday, August 07, 2008
Wednesday, August 06, 2008
Tuesday, August 05, 2008
Another warm day. This is a stylized version of part of my back yard. Some details are missing as I am doing this somewhat from memory because it is dark outside. At some point shortly, I will do a more accurate rendering including the second tree by the pond and another further back by the fence. The pond is actually a bit larger than shown here.
Monday, August 04, 2008
Sunday, August 03, 2008
Friday, August 01, 2008
With 3 shadowy figures on the ridge the herd moves closer together. Coyotes. Cookie-thieving coyotes. Sluggo, unfazed, continues to track with more determiniation.
I am done with work for this week. Now it is my time and the weekend. Going to start my ATCs for the swap and just enjoy. We might even get a sunny day here in Oregon.
Using a new Canson 3x5 sketchbook with 50lb paper. Prismacolor pencils and Micron pen.