Synopsis

Between the boundless blue of the sky and the endless black of space lies a frontier that scientists are only now beginning to explore. In "At the Edge of Space," NOVA invites viewers on a breathtaking journey to the Earth-space boundary, a realm where some of nature's most enigmatic and captivating phenomena occur: the shimmering aurora, meteors blazing across the heavens, and fleeting flashes that erupt from thunderclouds, known as sprites. Discovered only in 1989, sprites have proven elusive,