Final answer:
The only reliable way to obtain dependable results when exploring great distances in space is through spacecraft autonomy and independence.
Step-by-step explanation:
The only reliable way to obtain dependable results when exploring great distances in space is through spacecraft autonomy and independence. Spacecraft designed for outer solar system missions must be highly reliable and capable of functioning independently for long periods of time. They must carry their own power sources and have radio transmitters powerful enough to send data back to Earth. These features are necessary due to the significant flight times and communication delays involved in space exploration.