Q&A with Eric Smith, JWST program director

A Vega rocket faltered minutes after liftoff from French Guiana at 9:53 p.m. EDT Wednesday (0153 GMT) and failed to reach orbit with a European-built reconnaissance satellite for the United Arab Emirates. The payload and launcher fell into the Atlantic Ocean, marking the first failure for the solid-fueled Vega launch vehicle.

Ground crews have mounted the fully-fueled Sentinel 2B spacecraft, the next mission in Europe’s multibillion-dollar Copernicus Earth observation satellite fleet, on top of a Vega rocket inside a protective gantry on its launch pad in French Guiana for blastoff next month.

Launches of interplanetary missions can only depart Earth when the positions of the planets are just right, and officials managing the development of probes set for launch in 2021 and 2022 to explore asteroids and Jupiter says construction milestones and reviews are proceeding to keep the projects on schedule despite the coronavirus pandemic.