Live coverage: Falcon 9 rocket conducts static fire test

Blaming a slew of technical snags and “avoidable errors,” NASA officials said Tuesday that the launch of the James Webb Space Telescope, already years behind schedule, will be delayed to 2020, potentially pushing the mission’s development cost above an $8 billion cap mandated by Congress.

The commercial SpaceX Dragon cargo-delivery craft with the experimental BEAM module — the Bigelow Expandable Activity Module — arrives at the International Space Station two days after launching from Cape Canaveral.

NASA has selected Maxar Technologies for a $375 million contract to design, build and launch the core element of a mini-space station in orbit around the moon that will double as a deep space research outpost and a staging point for future human expeditions to the lunar surface.