Quest for the divine ... the work of outsider artist Joe Roberts Photograph: © Joe RobertsQuest for the divine ... the work of outsider artist Joe Roberts Photograph: © Joe RobertsArt and designInterviewArtist Joe Roberts: 'The psychedelic experience is an incredible tool'Stuart JeffriesThe San Franciscan’s hallucinogenic journeys inspire colourful paintings featuring Mickey Mouse, Freddy Krueger and the Wu-Tang Clan “It could be argued,” says Joe Roberts, “that the whole world is on one drug or another.

Pop and rockObituaryAl Jarreau obituaryAward-winning American jazz, R&B and pop singer whose hits included the theme tune of the 1980s television series MoonlightingAl Jarreau, the acrobatically skilful, warmly soulful American singer, who has died aged 76, always seemed too generous an individual to get much pleasure out of proving knowalls wrong. But by the third decade of a career in which the jazz cognoscenti had often been snooty about his commercial leanings, and pop tastemakers about his jazz ones, he was getting plenty of opportunities for the last laugh.

The ObserverAstronomyA new play explores the short life of Jeremiah Horrocks, whose astonishing discoveries ‘changed the way we see the universe’ On a cloudy afternoon in England in 1639, 20-year-old Jeremiah Horrocks became the first person to accurately predict the transit of Venus and measure the distance from the Earth to the sun. His work proved, for the first time, that Earth is not at the centre of the universe, but revolves around the sun, refuting contemporary religious beliefs and laying the foundations for Isaac Newton’s groundbreaking work on gravity.

Children's booksGlobalThe Maze Runner - quizWith movie of James Dashner's book The Maze Runner coming out this weekend, it's time to test your knowledge. Will you escape the Maze…? Find out more about James Dashner in this aMazing interview ncG1vNJzZmivp6x7tbTEoKyaqpSerq96wqikaJuYnrmlvsSnqmaan6S4tHnSoqueZ6Gqtrt7kWlobWefmMFwfY9oq6GdXaKuu7GMq6ynppWnequtzJ6qZpyRqLWvsdFmqK6hqg%3D%3D

Music This article is more than 10 years oldThousands gather to mourn death of Tabu Ley RochereauThis article is more than 10 years oldRumba pioneer remembered at state funeral in the Democratic Republic of CongoTabu Ley Rochereau, who died 30 November, was commemorated this week at a state funeral in the Democratic Republic of Congo. Thousands gathered at the parliament in the capital, Kinshasa, to pay tribute to the late rumba star, who passed away, aged 76, at Saint-Luc hospital in Brussels, according to his son-in-law Jean Claude Muissa.