International Space Station Commander Barry "Butch" Wilmore holds up the first object made in space with 3-D printing on Nov. 25. NASA hide caption

itoggle caption NASA

The new capsules are being built by Boeing and SpaceX. They look similar, but there are differences. SpaceX, The Boeing Company hide caption

itoggle caption SpaceX, The Boeing Company

The Two-Way

How NASA's New Spaceships Stack Up

Earlier this week, NASA awarded two contracts for new spaceships to commercial companies. Here's how they compare.

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NASA Administrator Charles Bolden speaks during a news conference in Berlin on Monday. Bolden said no single country was indispensable to the International Space Station's success. Michael Sohn/AP hide caption

itoggle caption Michael Sohn/AP

From left: U.S. astronaut Steve Swanson, and Russian cosmonauts Alexander Skvortsov and Oleg Artemyev prior to the launch of their Soyuz-FG rocket Wednesday at the Baikonur Cosmodrome in Kazakhstan. Dmitry Lovetsky/AP hide caption

itoggle caption Dmitry Lovetsky/AP

Russian personnel are the first to meet space station crew members when they return to earth. Bill Ingalls/NASA hide caption

itoggle caption Bill Ingalls/NASA

NASA astronaut Chris Cassidy performs a spacewalk in May to inspect and replace a pump controller box on the International Space Station. On Saturday, two astronauts will perform the first in a series of similar spacewalks to fix a broken cooling line on the ISS. AP hide caption

itoggle caption AP