Conner and FatSam are cuddling and watching Sagan's old "Cosmos" show ... they start showing images from Mars.
Connor said, "How do they know that? Mars is far away."
FatSam paused the video. "Well," FatSam said, "we sent robots to Mars and the robots took pictures."
"So the robots know it then. But how do they know it?"
"The robots sent the pictures home so people could see them."
"Home to Earth?"
"But how do they send pictures home?"
FaSam had to think about it. "By radio, I think with little satellite dishes."
"You don't know?"
"I don't actually know everything."
"I know, Richard told me. Maybe it's like your phone, your cell phone, like if it was cell phones on Mars. Do the robots come home when they're done?"
"No, they stay there and keep taking pictures."
"Oh." Connor paused. "It's sad they don't get to come home. You can start the show again now."