CST-100 Starliner in orbit
Dream Chaser captive carry
Technical problems could delay the beginning of regular flights by SpaceX's Crew Dragon (left) and Boeing's CST-100 Starliner until at least late 2018. Credit: SpaceX artist's concept and Boeing
SpaceX Dragon 2 (left) and Boeing CST-100 capsules. Credit: SpaceX artist's concept and Boeing
CST-100 mockup
Technical problems could delay the beginning of regular flights by SpaceX's Crew Dragon (left) and Boeing's CST-100 Starliner until at least late 2018. Credit: SpaceX artist's concept and Boeing
The Soyuz MS-02 spacecraft being prepared for launch in September. A problem with the spacecraft found only after it was placed inside its payload fairing has delayed its launch until the end of October. Credit: NASA/Victor Zelentsov
Crew Dragon Falcon 9 Pad 39A
Crew Dragon docking
CST-100 Starliner in orbit
Technical problems could delay the beginning of regular flights by SpaceX's Crew Dragon (left) and Boeing's CST-100 Starliner until at least late 2018. Credit: SpaceX artist's concept and Boeing
Technical problems could delay the beginning of regular flights by SpaceX's Crew Dragon (left) and Boeing's CST-100 Starliner until at least late 2018. Credit: SpaceX artist's concept and Boeing
Crew Dragon docking
SpaceX Crew Dragon. Credit: SpaceX artist's concept
Falcon 9 moments after lifting off from Cape Canaveral's Complex 40 launch pad. Credit: Craig Vander Galien for SpaceNews
Artist's concept of Boeing's CST-100 Starliner capsule approaching the International Space Station. Credit: NASA/Boeing

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