ocr: How do you control space probes? SATELLITES EARTH RADIO SIGNALS Satellite commi unications When you talk to someone on the other side of the world, radio signals that carry your conversation bounce between satellites in space as they travel around the world. The signals travel at the speed oflight, but there may still be a delay before your words reach the person that you are talking to. When scientists commumcate with space probes, the problem is even worse. Signals take more than a second to reach the Moon, and more than ten minutes to reach Mars. This is why Sojourner - the buggy that explo ...
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