NASA's New Horizons mission will be the first ever to visit Pluto and its moons. This artist's conception shows the probe as it passes the dwarf planet. JHUAPL/SwRI hide caption

itoggle caption JHUAPL/SwRI

The Soyuz-U space launch vehicle rocket carrying the Russian cargo ship Progress M-28M launched from the Baikonur Cosmodrome on Friday. The Progress resupply capsule successfully docked with the International Space Station on Sunday. Sergai Savostyanov/ITAR-TASS/Landov hide caption

itoggle caption Sergai Savostyanov/ITAR-TASS/Landov

On Friday, a Russian Soyuz rocket will send an unmanned cargo ship with more than 3 tons of food, water and fuel for astronauts aboard the International Space Station. Russian Federal Space Agency hide caption

itoggle caption Russian Federal Space Agency

Theoretical Physicist Sean Carroll asks why does time exist? Marla Aufmuth/Courtesy of TED hide caption

itoggle caption Marla Aufmuth/Courtesy of TED

"Human beings are works in progress that mistakenly think they're finished," says psychologist Dan Gilbert. Ryan Lash/Courtesy of TED hide caption

itoggle caption Ryan Lash/Courtesy of TED