The justices of the Supreme Court

The Associated Press
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FILE - This Oct. 8, 2010 file photo shows the justices of the U.S. Supreme Court in a group portrait at the Supreme Court Building in Washington. The Supreme Court is embarking on a new term beginning Monday that could be as consequential as the last one with the prospect for major rulings about affirmative action, gay marriage and voting rights. Seated from left to right are: Associate Justice Clarence Thomas, Associate Justice Antonin Scalia, Chief Justice John G. Roberts, Associate Justice Anthony M. Kennedy, Associate Justice Ruth Bader Ginsburg. Standing, from left are: Associate Justice Sonia Sotomayor, Associate Justice Stephen Breyer, Associate Justice Samuel Alito Jr., and Associate Justice Elena Kagan. (AP Photo/Pablo Martinez Monsivais)

The justices of the Supreme Court, in order of seniority, with their age, the presidents who appointed them, and when they took their seats on the high court. The chief justice is considered the most senior, regardless of the length of tenure:

—Chief Justice John Roberts, 57, appointed by President George W. Bush, September 2005

—Justice Antonin Scalia, 76, President Ronald Reagan, September 1986

—Justice Anthony Kennedy, 76, Reagan, February 1988

—Justice Clarence Thomas, 64, President George H.W. Bush, October 1991

—Justice Ruth Bader Ginsburg, 79, President Bill Clinton, August 1993

—Justice Stephen Breyer, 74, Clinton, August 1994

—Justice Samuel Alito, 62, George W. Bush, January 2006

—Justice Sonia Sotomayor, 58, President Barack Obama, August 2009

—Justice Elena Kagan, 52, Obama, August 2010