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Anne Arundel students get to talk to ISS astronauts

While Maryland-native Ricky Arnold is on the International Space Station, the astronaut made time Thursday to talk to a familiar group of people -- high schoolers. Before Arnold went to work for NASA, he was a teacher. He returned to his roots Thursday to take questions from students on Earth.

NASA images of Earth

Pictures by NASA of Planet Earth, and the astronauts who took them.