Sen. Kennedy And President Obama

Sen. Ted Kennedy with Barack Obama during an Obama for President rally at American University in Washington, D.C., January 28, 2008 (Photo by Evan Vucci/AP)

Sen. Kennedy Talks With Reporters

Sen. Ted Kennedy spoke to reporters outside his Hyannisport home in May 2008, days after being diagnosed with a cancerous brain tumor. (WBZ)

Kennedy Siblings

A young Ted Kennedy poses with his siblings in 1941. (L-R) Eunice, Bobby, Teddy, and Jean Kennedy. (AP)

Kennedy Brothers

Edward Kennedy, then a student at the University of Virginia, with his brothers John F. Kennedy, then a U.S. senator from Massachusetts, and Robert F. Kennedy, then chief counsel to the Senate Rackets Committee. (AP)

Edward & Joan Marry

Edward Kennedy and Joan Bennett are married on Nov. 11, 1958 at St. Joseph's Church in Bronxville, NY. (AP)

John and Ted

John F. Kennedy and Ted Kennedy in Hyannisport in July 1960. (AP)

Kennedys Go Skiing

Attorney General-elect Robert F. Kennedy and his brother Ted ski in Stowe, Vermont in December 1960. (AP)

Ted Kennedy Wins Senate Seat

Newly elected Senator Ted Kennedy and his wife Joan wave to party workers on November 6, 1962. Kennedy won the senate seat vacated two years earlier when his brother John was elected President. (AP)

Kennedy Brothers At White House

In 1962 brothers Robert F. Kennedy, Edward Kennedy and President John F. Kennedy pose at the White House. (AP)

President Kennedy's Funeral Procession

Widow Jacqueline Kennedy is flanked by her brothers-in-law Robert F. Kennedy and Ted Kennedy in the procession carrying the coffin of slain President John F. Kennedy. (AP)

Sen. Kennedy At JFK's Funeral

Jacqueline Kennedy enters the church with her children Caroline and John F. Kennedy Jr., for the funeral of President John F. Kennedy. In the background is the President's brother, Sen. Ted Kennedy. (AP)

Sen. Kennedy With Wife Joan

Kennedy with his wife Joan at New England Baptist Hospital in November 1964, after he was injured in a plane crash. (AP)

Senator Ted Kennedy With Father

(credit: AP)

Sen. Ted Kennedy with his father, Joseph P. Kennedy at New England Baptist Hospital in December 1964, as senator Kennedy recovered from injuries suffered in a plane crash. (AP)

Sen. Kennedy and Wife Joan In Vietnam

Sen. Ted Kennedy and his wife Joan arrive in Vietnam in October 1965. (AP)

Sen. Kennedy With Carl Yastrzemski

Sen. Ted Kennedy and Vice President Hubert Humphrey talk with Red Sox slugger Carl Yastrzemski at Fenway Park in September 1967. (AP)

Kennedy Brothers

Sen. Ted Kennedy and his brother, Sen. Robert Kennedy of New York sit together during a session of the Senate Labor Subcommittee in March 1967. (AP)

Funeral Of Robert F. Kennedy

The casket of Robert F. Kennedy is carried to a grave site at Arlington National Cemetery on June 8, 1968. Edward Kennedy is second from the left. (AP)

Sen. Ted Kennedy At Sen. Robert Kennedy's Funeral

Ethel Kennedy is escorted by her brother-in-law Sen. Edward Kennedy at the funeral of her husband, Sen. Robert F. Kennedy. (AP)

Sen. Kennedy Leaves Courthouse

Kennedy leaves an Edgartown, Mass. courthouse in July 1969 after receiving a two month suspended sentence for failure to report the Chappaquiddick car accident that killed his aide Mary Jo Kopechne. (AP)

Sen. Kennedy and George McGovern

Kennedy introduces presidential nominee George McGovern to the party's delegates in Miami, on July 14, 1972. (AP)

Sen. Kennedy and Family

Ted Kennedy Jr. is flanked by his parents Sen. Ted Kennedy and Joan Kennedy in West Palm Beach, Florida in December 1973. The young Kennedy lost a leg to bone cancer. (AP)

Sen. Kennedy and Barbara Walters

Sen. Ted Kennedy is interviewed by Barbara Walters in the Boston Public Garden on May 28, 1976. (AP)

Kennedy Family In China

Kennedy and his wife Joan pose with their children Ted Jr. and Kara at the Great Wall of China. (Photo from Ladies Home Journal/AP)

Sen. Kennedy and Coretta Scott King

Kennedy and Coretta Scott King share a laugh before Kennedy spoke at a 50th birthday celebration of slain civil rights leader Martin Luther King, Jr. in January 1979. (AP)

Sen. Kennedy and Wife Joan

Kennedy and wife Joan accompany their son Ted Jr. at Wesleyan University in November 1979. (Photo by Bob Child/AP)

Sen. Kennedy

Kennedy withdraws his bid for president on day one of the 1980 Democratic National Convention in New York City. Kennedy had challenged incumbent President Jimmy Carter for the Democratic nomination. (AP)

Sen. Kennedy

Ted Kennedy speaks at the 1980 Democratic National Convention. (AP)

Sen. Kennedy

Jackie Kennedy and her children John F. Kennedy Jr. and Caroline stand with their uncle Ted Kennedy at John Jr.'s 1983 graduation from Brown University. (AP)

Sen. Kennedy and President Reagan

Senator Ted Kennedy and President Ronald Reagan during a 1985 fundraiser for the John F. Kennedy Library. (Photo by Charles Tasnadi/AP)

Sen. and Mrs. Kennedy

Senator Ted Kennedy and his wife Vicki in Hyannisport, 1992. (Photo by Susan Walsh/AP)

Sen. Kennedy and Hillary Clinton

Senator Ted Kennedy, Chairman of the Senate Labor Committee shows then-first lady Hillary Clinton to her seat as she prepares to testify before the committee in 1993. (Photo by Doug Mills/AP)

Sen. Kennedy, JFK Jr., Caroline Kennedy

Sen. Ted Kennedy, John F. Kennedy Jr., and Caroline Kennedy at the Kennedy Library in Boston, 1996. (Photo by Charles Krupa/AP)

Sen. Ted Kennedy

Kennedy speaks outside the Massachusetts State House in Boston, in May 1996. (Photo by Elise Amendola/AP)

Sen. Ted Kennedy

Sen. Ted Kennedy speaks at the 1996 Democratic National Convention in Chicago. (Photo by Ed Reinke/AP)

Sen. Kennedy At Nephew's Funeral

Kennedy, Maria Shriver and Arnold Schwarzenegger leave the funeral of Kennedy's nephew Michael Kennedy in January 1998. Michael Kennedy died in a skiing accident. (Photo by Robert Bukaty/AP)

Sens. Kennedy and McCain With Spouses

Kennedy holds the Profile In Courage award, next to co-winner Sen. John McCain in May 1999. In the background, their spouses Vicki Kennedy and Cindy McCain. (Photo by Elise Amendola/AP)

Sen. Ted Kennedy and US Rep Patrick Kennedy

Senator Ted Kennedy stands with his son, U.S. Rep. Patrick Kennedy on a boat off the coast of Martha's Vineyard on July 21, 1999. Navy divers were working to recover the bodies of John F. Kennedy Jr., his wife and sister-in-law. (Photo by Charles Krupa/AP)

Sen. Kennedy and Vice President Gore

Vice President Al Gore shares a laugh with Senator Ted Kennedy, who endorsed Gore's presidential campaign in January 2000. (AP)

Sen. Kennedy and Caroline Kennedy

Senator Ted Kennedy and his niece, Caroline Kennedy, speak at the 2000 Democratic National Convention in Los Angeles. (Photo by Ron Edmonds/AP)

Sen. Kennedy and President Bush

President George W. Bush and Senator Ted Kennedy speak in January 2002 about education reform. (Photo by Ron Edmonds/AP)

Sen. Kennedy and President Clinton

Kennedy and former President Bill Clinton share a laugh at the John F. Kennedy Library in 2003. (Photo by Steven Senne/AP)

Sens. Kennedy and Biden

Kennedy confers with Senator Joseph Biden during a 2003 Senate Judiciary Committee hearing on the Patriot Act. (Photo by Gerald Herbert/AP)

Sen. Ted Kennedy

Kennedy speaks at George Washington University in 2004. (Photo by Manuel Balce Ceneta/AP)

Sens. Kennedy and Kerry

Senator Ted Kennedy with fellow Massachusetts Senator, and then-Presidential Candidate John Kerry at a 2004 fundraiser in Boston. (Photo by Steven Senne/AP)

Sen. Ted Kennedy

Kennedy during the confirmation hearings for Judge Samuel Alito, January 2006. (Photo by Susan Walsh/AP)

Sen. Ted Kennedy

Kennedy speaks at the National Hispanic Cultural Center in New Mexico on January 31, 2008. (Photo by Toby Jorrin/AP)