Fill in the blank: Tell us who else you think should make a phone, in the comments section below. Giorgio Magini/iStockphoto.com hide caption
Mark Stencel
Mark Stencel is managing editor for digital news at NPR.Thursday
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An artist's rendering shows a rocket-powered descent stage lowering the one-ton Curiosity rover to the Mars surface. NASA/JPL-Caltech hide caption
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A series of 1931 newspaper ads touted the latest comfort for rail passengers on the B&O's Columbian line. Baltimore & Ohio Railroad ad hide caption
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Even Harry Potter's newspaper, the Daily Prophet, is defenseless when a president summons the press to the White House with an "accio" spell. Warner Bros. hide caption
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Spectators watch the space shuttle Atlantis lift off from the Kennedy Space Center Friday in Cape Canaveral, Fla. Atlantis is the 135th and final shuttle launch for NASA. Terry Renna/AP hide caption
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NASA Space Shuttle astronaut Capt. Mark Kelly at a luncheon at the National Press Club in Washington. Charles Dharapak/AP hide caption
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Brenda Mulberry runs a T-shirt and custom merchandise shop just a few miles from Kennedy Space Center. Her husband, Gerry, was let go last month after spending most of his adult life working as a contractor on NASA's shuttle program. Mark Stencel/NPR hide caption
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Astronaut Janet Kavandi, director of Flight Crew Operations for Johnson Space Center, leads President Barack Obama, First Lady Michelle Obama and daughters Sasha and Malia, as they view the front landing gear of Space Shuttle Atlantis. Saul Loeb/AFP/Getty Images hide caption
The space shuttle Endeavour is seen on launch pad 39a as a storm passes by prior to the rollback of the Rotating Service Structure (RSS), Thursday, April 28, 2011, at Kennedy Space Center in Cape Canaveral, Fla. Bill Ingalls/NASA hide caption