Big news for Gabby Giffords and husband Mark Kelly: He is retiring from NASA, and the two will write a memoir together about their careers, courtship, and the Arizona shooting, reports USA Today. "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," Kelly tells AP. No word yet on a title or due date. They will collaborate with Wall Street Journal columnist and author Jeffrey Zaslow, who worked on Randy Pausch's The Last Lecture and Capt. Chesley Sullenberger's Highest Duty. Giffords is out of the hospital and is in rehab as an outpatient in Houston.