A Bali court has sentenced Australian Schapelle Corby to 20 years in prison for trying to smuggle 4.1kgs of marijuana into Indonesia. Judges also fined Corby 100 million rupiah ($A13,000). Her lawyers immediately said they would appeal. The Australian government has offered assistance to Corby's defence team to launch a legal challenge, Foreign Minister Alexander Downer said. Prosecutors had sought a life sentence and also said they would appeal. Earlier, Corby, 27, broke down in tears as the panel of three judges in the Denpasar District Court said the charges against her of smuggling marijuana had been "convincingly" proven. Soon...