Q&A with Mimi Aung, Mars Helicopter project manager at JPL (members only)

The White House Office of Science and Technology Policy is spearheading a 10-year plan to improve detection of near-Earth asteroids and comets that could crash into Earth and to expand research into possible countermeasures to deflect an incoming body if detected in time, officials said Wednesday.

A refurbished SpaceX Crew Dragon spaceship linked up with the International Space Station early Saturday more than 260 miles above Earth, delivering four veteran astronauts to the orbiting research complex and temporarily raising the lab’s crew complement to 11.

Concerns about the health of the Juno spacecraft’s main engine have compelled NASA managers to keep the research probe in its current arcing, high-altitude orbit around Jupiter, a decision that will delay the full science return from the $1.1 billion mission but should still allow it to meet all predetermined objectives.