In September 2017 NASA deliberately flew the Cassini spacecraft into Saturn, ending a 20-year mission — not because it failed, but because it found a possibly habitable ocean on the moon Enceladus that a dead, uncontrollable probe might one day contaminate.
In September 2017, after twenty years in space and thirteen years orbiting Saturn, NASA pointed the Cassini spacecraft into the planet and let it burn up like a meteor. The probe was not broken. It had just spent more than a decade transforming Satur... [12517 chars]