This Jan. 29, 1997 file photo shows author Ray Bradbury at a signing for his book "Quicker Than The Eye" in Cupertino, Calif. Bradbury, who wrote everything from science-fiction and mystery to humor, died Tuesday, June 5, 2012 in Southern California. He was 91. (AP Photo/Steve Castillo, file) Photo: STEVE CASTILLO, Associated Press

Author Ray Bradbury signs his new book "Bradbury: An Illustrated Life" at Barnes & Noble on October 19, 2002 in Los Angeles, California. It was reported on June 6, 2012 that science-fiction author Ray Bradbury has died at 91 in Los Angeles. Photo: Jon Kopaloff, Getty Images

Writer Ray Bradbury delivers a lecture at the 12th Annual L.A. Times Festival of Books at Royce Hall on the U.C.L.A. campus on April 28, 2007 in Los Angeles, California. It was reported on June 6, 2012 that science-fiction author Ray Bradbury has died at 91 in Los Angeles. Photo: Charley Gallay, Getty Images

Legendary science fiction author Ray Bradbury attends a luncheon celebrating the Golden Globe nominated Best Foreign Language Film (France) "I've Loved You So Long" at the residence of The Consul General of France-Los Angeles on January 9, 2009 in Beverly Hills, California. It was reported on June 6, 2012 that science-fiction author Ray Bradbury has died at 91 in Los Angeles. Photo: Vince Bucci, Getty Images

In this image released by Simon & Schuster, the cover of "Fahrenheit 451," by Ray Bradbury, is shown. (AP Photo/Simon & Schuster) Photo: Simon & Schuster

This 2004 White House photo shows former US President George W. Bush, author Ray Bradley(C) and First Lady Laura Bush after Bradley accepted the 2004 National Medal of Arts award in Washington,DC. Ray Bradbury, the science fiction legend who penned "Fahrenheit 451" and "The Martian Chronicles," has died at the age of 91, his family said June 6, 2012. "The world has lost one of the best writers it's ever known, and one of the dearest men to my heart. RIP Ray Bradbury (Ol' Gramps)," tweeted his grandson Danny Karapetian. Ray Bradbury's fiction served as cautionary tales about perilous futures. In all, the award-winning writer penned nearly 600 short stories and 30 books, including "The Martian Chronicles" about human attempts to colonize Mars and the unintended consequences. AFP PHOTO/THE WHITE HOUSE/SUSAN STERNER/HANDOUT/RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT " AFP PHOTO / - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS SUSAN STERNER/AFP/GettyImages Photo: SUSAN STERNER, AFP/Getty Images

Writer Ray Bradbury, left, addresses members of the President's Commission on Moon, Mars and Beyond, via satellite in San Francisco on Thursday, April 15, 2004. Photo: MARCIO JOSE SANCHEZ, AP

Science fiction author Ray Bradbury sits in front of a photo of Mars, presented to him during an 83rd birthday party in his honor Saturday, Aug. 23, 2003, at The Planetary Society in Pasadena, Calif.
Photo: STEFANO PALTERA, AP

Dr. Louis Friedman, left, executive director of The Planetary Society, presents author Ray Bradbury, with a Mars-shaped cake at Bradbury's 83rd birthday party held Saturday, Aug. 23, 2003, at the Planetary Society in Pasadena, Calif.
Photo: STEFANO PALTERA, AP

Science fiction author Ray Bradbury, right, enjoys an 83rd birthday celebration in his honor with actresses Angie Dickinson, right, and "Star Trek" veteran Nichelle Nichols, along with science fiction author Kim Stanley Robinson, Saturday, Aug. 23, 2003, at The Planetary Society in Pasadena, Calif. Photo: STEFANO PALTERA, AP

This Nov. 15, 2000 file photo shows science fiction writer Ray Bradbury at the National Book Awards in New York where he was given the Medal for Distinguished Contribution to American Letters. Bradbury, who wrote everything from science-fiction and mystery to humor, died Tuesday, June 5, 2012 in Southern California. He was 91. (AP Photo/Mark Lennihan, file) Photo: MARK LENNIHAN, Associated Press