Live coverage: Soyuz crew lands in Kazakhstan

A senior NASA official raised concerns Wednesday that “difficulties” with SpaceX’s development of the huge new Starship rocket could delay the Artemis program’s first moon landing with astronauts from late 2025, a mission that will use a derivative of the Starship vehicle to ferry a two-person crew to and from the lunar surface.

A decade in the making, the core stage for NASA’s first Space Launch System heavy-lift rocket rolled into the Vehicle Assembly Building at the Kennedy Space Center Thursday to join up with twin solid rocket boosters and an Orion capsule for an unpiloted test flight around the moon.

SpaceX and OneWeb — space industry rivals and owners of two of the largest fleets of commercial satellites — are set to add more spacecraft to their internet networks Wednesday with launches from Cape Canaveral and Russia.