Pulling from the list of her favorite stories for this volume of Fiction River Presents, editor Kristine Kathryn Rusch takes readers on a thrilling journey. From little rovers exploring the planets where humans cannot yet go, to human explorers flung into realms of space/time beyond their knowledge and experience, to aliens who drop in for a visit to Earth for purposes only they can fathom-these travelers entertain, sometimes terrify, and always...