The rocky planets Mercury, Venus, Earth, and Mars were born at the same time from the same material - yet have lived radically different lives. What immense forces are at play?
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.
MARS: Inside SpaceX will go inside SpaceX's plan to get humanity to Mars, providing an unprecedented glimpse into one of the world's most revolutionary companies. Filmed over the course of three years - this journey will take us behind the scenes with Elon Musk and his engineers - as they persevere amidst both disheartening setbacks and huge triumphs to advance the space industry faster than we ever thought possible.