Live coverage: Cygnus spacecraft arrives at space station

A Rocket Lab Electron launcher malfunctioned about two-and-a-half minutes after liftoff from New Zealand Saturday, destroying two BlackSky optical Earth-imaging satellites in the launch company’s second failed flight in less than a year.

A British satellite released from the International Space Station last year has successfully demonstrated a harpoon that could be used on future missions to clean up space debris, officials announced Friday.

It’s Steve Clarke’s job to merge the goals of space scientists with NASA’s strategic plans for exploring the solar system, two factors which are not always in lock-step, as the space agency seeks to return humans to the moon, and eventually send astronauts to Mars.