It was 30 years ago that the first space shuttle, Columbia, was launched. It was such a triumph of technology, engineering and organization that it's easy to forget the programme was primarily the product of an economy drive. The disposable Apollo missions had cost billions. A reusable craft was deemed more expedient.
Its story has been characterized by incredible triumphs, but blighted by devastating tragedies – and the BBC and Horizon have chronicled every step of its career.
This unique and poignant Horizon Guide brings together coverage from three decades of programmes to present a biography of the shuttle and to ask what its legacy will be.
Will it be remembered as an impressive chapter in human space exploration, or as a fatally flawed white elephant?