NASA

NASA is an organization that studies science in space.

Arthur imagined training for 20 years to fly to Jupiter on a space shuttle, but D.W. wasn't with him, so the mission was cancelled.

In Arthur's imagination, Buster was an astronaut who was sent on the Explorer 17 space shuttle to Jupiter. He went through some cosmic rays on his way back to Earth.

Arthur imagined going on the Titan XII, the first manned mission to Mars.

Mike Fincke worked as an astronaut on the International Space Station.

Arthur

 * D.W., the Picky Eater
 * Buster's Back
 * Arthur's Number Nightmare
 * Buster Spaces Out