Interstellar Explained: Cooper’s Choice and the Ethics of Leaving

In Interstellar (2014), Cooper leaves his children in order to help save them. The apparent clarity of that sentence conceals the film’s central moral difficulty. He cannot protect Murph and Tom from a dying Earth by remaining a farmer indefinitely, but he also cannot remain their father in any ordinary sense while travelling through a wormhole. The mission offers a possible future for humanity at the price of years his children will have to live without him. At the end, Murph helps make that future possible, and Cooper returns to find her near death. The success of their work answers the question of whether the journey mattered. It does not settle whether a father was entitled to impose its costs on his children.

The film opens with a world that has lost confidence in its future. Blight destroys crops, dust drifts into the family home, and schools train children to adapt to contraction rather than imagine expansion. Cooper, a former pilot and engineer, farms because food has become a more urgent social need than exploration. Yet the apparent opposition between farming and flight is deceptive. Both are attempts to sustain life. The problem is that Cooper sees one as a temporary surrender of his capacities and the other as a calling. When the secret NASA project offers him a place on its expedition, a public duty coincides with a…