Gego: Drawing in Space at the Guggenheim

Air, light, height, with a tingle of vertigo, are what the Guggenheim Museum’s spiraling rotunda is about. Which makes it a near-ideal setting for the buoyant, lucent, constellational work of the German-born Venezuelan artist Gertrud Goldschmidt, who called herself Gego, and who made some of the most radically beautiful sculpture of the second half of…