Exhibition of the week Jasper Johns The intellect and emotion of the objects and paintings, prints and assemblages of this exquisite artist put him at the centre of the art of our time. Flags, targets, maps and beer cans – Johns has done them all with unequalled wit. He managed to invent pop art, conceptual art and minimalism all in one go when he started to make an American flag out of waxy paint layered over newspaper collage in 1954 and has been meditating with the same serious irony about objects and their meanings ever since. • Royal Academy, London, from 23 September to 10 December. Also this week Turner prize 2017 May it be forever young – but not ageist any more, with Lubaina Himid and Hurvin Anderson both riding roughshod over the “under 50” rule in a shortlist that also includes Andrea Büttner and Rosalind Nashashibi. • Ferens Art Gallery, Hull, from 26 September to 7 January. Marcel Broodthaers This great Belgian visionary began as a surrealist and became the wittiest and strangest pioneer of conceptual art. • Hauser & Wirth, London, from 27 September to 18 November. Jesse Wine and Haffendi Anuar London’s latest venue for public art is Battersea power station. Will the first sculptures in a new series called Powerhouse Commissions outdo Pink Floyd’s flying pigs in exploiting this iconic setting? • Battersea power station, London, from 26 September. Daniel Buren The veteran French conceptual artist reveals his latest works, in which brightly coloured geometric shapes are repeated and reflected in big mirrored surfaces. • Lisson Gallery, London, from 22 September to 11 November. Masterpiece of the week The Virgin and Child (1426) by Masaccio |