The last hundred years have given us a remarkable picture of the universe; the last ten years have brought it into sharp focus.

• The last hundred years have given us a remarkable picture of the universe; the last ten years have brought it into sharp focus.

• We are blessed with puzzles about the evolution, composition, and origin of the universe – but they don't seem completely intractable.

• Theoretical work is driven by data, so we never really know what's coming.

• Scientific cosmology was born and matured in the 20th century. The 21st is unlikely to be as groundbreaking – but there will be plenty of surprises. Right now we don't even know what questions we'll be asking.