'I don't believe the word love has ever meant the same thing twice.' Arabella loves the way she makes her see the stars. Alan loves a man he'll never meet again. Tammy loves a woman she's never met. And CAL loves like no human has ever loved before. Launching from a 17th-century opera house through cislunar space and into the distant future, Callisto tells four stories that have nothing and everything in common.A bright constellation of queer encounters.--Cover, page 4.