Video: Marc Buie, New Horizons Occultation Team Lead (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 European Ariane 5 rocket delivered two commercial communications satellites to orbit Thursday after Arianespace’s ground team lost telemetry from the launcher during its climb into orbit, raising concerns that the mission might have failed. The SES 14 and Al Yah 3 satellites are confirmed in orbit and healthy, but the parameters of their orbits are unknown. Both were heading toward 22,000-mile-high geostationary perches over the equator.

One week after a Russian Soyuz spacecraft departed the International Space Station and brought three crew members back to Earth, another Soyuz carrying a veteran cosmonaut and a first-time NASA flight engineer is ready for launch Thursday on a quick four-orbit flight to the orbiting lab complex.