Heather Christle's stunning fourth collection blends disarming honesty with keen leaps of the imagination. Like the boundary between our sun's sphere of influence and interstellar space, from which the book takes its name, the poems in Heliopause locate themselves along the border of the known and unknown, moving with breathtaking assurance from the page to the beyond. Christle finds striking parallels between subjects as varied as the fate of Voyager 1, the uncertain conception of new life, the nature of elegy, and the decaying transmission of information across time. Nimbly engaging with current events and lyric past, Heliopause marks a bold shift and growing vision in Christle's work. An online reader's companion will be available.