From Vatican to outer space, tributes flood in for David Bowie

Taking to Twitter or Facebook, many praised Bowie's groundbreaking music and offered their own recollections of the singer, known for a string of hits such as "Space Oddity" and "Let's Dance". Below are some of the tributes to Bowie, who released his last album "Blackstar" on Friday, also his birthday: DUNCAN JONES, BOWIE'S SON, POSTING A PICTURE OF THE SINGER ON TWITTER: "Very sorry and sad to say it's true. For now, it is appropriate to cry." THE ROLLING STONES' OFFICIAL TWITTER ACCOUNT: "The