Why Mars Is a Planetary Runt

Why Mars Is a Planetary Runt by Richard A Kerr
SceinceNow, May 25, 2011
http://news.sciencemag.org/sciencenow/2011/05/how-to-make-a-runt-of-the-solar.html

Small mass of Mars could be due to planetary orbital 
migration, PhysOrg, June 6, 2011
http://www.physorg.com/wire-news/68812270/small-mass-of-mars-could-be-due-to-planetary-orbital-migration.html
http://www.swri.org/9what/releases/2011/GrandTackScenario.htm

Why is Mars so tiny? Blame wandering Jupiter
New study seems to solve a difficult problem in 
solar system's formation, MSNBC, June 7, 2011
http://www.msnbc.msn.com/id/43311640/ns/technology_and_science-space/

The paper is:

Walsh, K. J., A. Morbidelli, S. N. Raymond, D. P. 
O'Brien, and A. M. Mandell, 2011, A low mass for 
Mars from Jupiter’s early gas-driven migration.
Nature. Published online 05 June 2011
doi:10.1038/nature10201
http://www.nature.com/nature/journal/vaop/ncurrent/full/nature10201.html

PDF file at:
http://www.ice.csic.es/files/upload_files/File/nature10201_mars_jupiter_migration.pdf
http://www.ice.cat/es/view_new.php?NID=113

Yours,

Paul H.