Karen Dennison's Of Hearts opens with a poem about Point Nemo, the 'spacecraft graveyard' and furthest place from land in the ocean. The poem sets the tone for a pamphlet which explores our tiny place in a vast, overwhelming universe. It is full of crisp, lucent, technically agile and clever poems of cosmic longing. Of Hearts is a deeply enjoyable pamphlet from a poet with her eyes pressed to a telescope, searching until 'the stars switch off'.