The moon has suddenly acquired its own satellite: a two-mile-across starship that represents a hitherto unsuspected Galactic Commonwealth. The F'thk, a vaguely centaur-like member species for whom Earth's ecology is hospitable, have been sent to evaluate humanity for prospective membership. The F'thk are overtly friendly but very private -- "Information is a trade good." As Earth's scientists struggle to understand their secretive appraisers, odd inconsistencies emerge. The Galactics' arrival may signify the start of a glorious new era, or it may presage the cataclysmic end of human civilization. Which outcome do the aliens really desire?

Release #154 for 2018 ...