Q&A with Eric Smith, JWST program director

NASA has directed the team developing the Wide-Field Infrared Survey Telescope, a flagship astronomy mission set for launch in the mid-2020s to study dark energy and exoplanets, to reduce the observatory’s scientific capabilities and keep it under a $3.2 billion cost cap.

The launch of the European Commission’s Sentinel-1C satellite is now targeting no earlier than Wednesday, Dec. 4, from the European Spaceport in French Guiana. The next update on launch preparations are set to be published on Friday, Nov. 29.

Europe’s Rosetta mission ended its 12-year mission Friday with a slow-speed belly-flop on comet 67P/Churyumov-Gerasimenko, concluding an interplanetary odyssey that gave humanity a first close-up introduction to a class of objects which has stimulated imaginations for millennia.