Boeing's Starliner and Dream Chaser face further delays for crewed missions.
Boeing's first crewed mission to the International Space Station (ISS) aboard its Starliner capsule has been delayed until summer due to the risk of overheating batteries. NASA is concerned that the Starliner's lithium-ion batteries could overheat while docked to the ISS. Boeing is now thinking about redesigning its batteries and adding shielding in the event one overheats. NASA has signed a contract to launch six missions using the Starliner in the future.