sedna n a planetoid of rock and ice about three-quarters the size of Pluto discovered in 2003; the most distant object known to orbit around the sun Synonym(s) Sedna
Quotes sedna David Jewitt in New Scientist (subscription) Today, more than ever before, we believe that public transit represents a vital tool in Montréal's economic development and a means of slowing climate change. The astounding observations that Jean Lemire and his crew from Sedna IV made during... Gerald Tremblay http://www.google.com/url?q=http://en.wikipedia.org/wiki/G%C3%A9rald_Tremblay&source=dictionary&usg=AFQjCNHp2VKkX_o3WzNqmu5XyxMJNVo7lQ Canada NewsWire (press release) http://www.google.com/url?q=http://www.newswire.ca/en/releases/archive/May2007/17/c2128.html&source=dictionary&usg=AFQjCNH3KLh7ExyaQAHn32VD2Ad4OacTzA May 17, 2007 87450 116911 sedna If you think Pluto is a planet, you should probably label Sedna that way, too, because it's almost as big," says Jewitt. "Get ready for a 20-planet Solar System!"