Tree Riesener's 'The Hubble Cantos' : Cosmic sleigh ride by John Timpane, Staff Writer @jtimpane | jt@phillynews.com The Hubble Cantos By Tree Riesener Aldrich Press. 90 pp. $17 This book is a Nantucket sleigh ride through the universe. Ambitious, funny, fearless, The Hubble Cantos shows us why we need poetry as well as science. With humor, wonder, and openness to the craziness of it all, Bryn Mawr's Tree Riesener creates a poetic count