Contributed by Mary Jones / Exuberance is a word frequently used in describing the work of JoAnne Carson, and, in “Cosmic Chatter,” her first solo show at DC Moore, it’s in hyperdrive. Twelve large, colorful paintings share the main gallery space with one eight-by-six-foot monochromatic sculpture of an intricately crafted white flowering tree. Placed near the entrance, the sculpture serves as a three-dimensional model and introduction to the paintings. The fragile delicacy of this surprising and marvelous object resembles an encounter with a conjured specimen preserved in ice, a fact among fiction.