Arizona Rep. Gabrielle Giffords and her astronaut husband, Mark Kelly, have made a deal to write a memoir of their lives together, their publisher said on Tuesday.

The book, currently untitled, will chronicle their courtship, Giffords' rise in U.S. politics and the Jan. 8 tragedy when Giffords was shot in the head during a political event in Tucson, Arizona, in an attack that killed six others and wounded 12 more.

The events of January 8 stirred our nation. We are deeply honored to publish Mark Kelly's and Gabby Giffords' memoir, which will fully unfold the remarkable story of two exceptionally brave public servants, said Susan Moldow, the publisher of Scribner, an imprint of Simon & Schuster.

Giffords, 41, was recently released from a Houston hospital and is set to receive outpatient therapy. She had been in the rehab facility since January, but is now living with Kelly at his home in League City, 26 miles south of Houston. Before the shooting, the couple had maintained independent lives; Kelly was based in Houston and Giffords in Tucson.

There are details of our personal lives together that I'd say I can count on one hand the people who know them. In some cases, it's just Gabby and I (who know the details), said Kelly, who on Tuesday announced to the Associated Press his retirement from the Navy and NASA to be by his wife's side.

After thinking about it, and talking about it, we decided it was the right thing to do to put our words and our voices on paper and tell our story from our point of view.

The couple have been married since 2007.