Q&A with Steve Clarke, deputy associate administrator for exploration in NASA’s science division (members only)

SpaceX launched and landed an upgraded prototype for the company’s next-generation Starship vehicle in South Texas on Wednesday, the company’s first Starship test flight since winning a $2.9 billion NASA contract to use the craft to land astronauts on the Moon.

Trouble with one of the Hubble Space Telescope’s three remaining gyroscopes, critical for aiming and locking onto targets, prompted mission managers to switch to a backup control mode that will limit some observations but keep the iconic observatory running well into the 2030s, officials said Tuesday.

An armored re-entry capsule carrying pristine specimens from an asteroid streaked into Earth’s atmosphere and parachuted to a landing in the Australian outback Saturday, bringing home extraterrestrial rocks that could hold clues to the origin of life on Earth.