Video: Ariane 5 takes off from French Guiana

The U.S. Space Force’s third new-generation GPS 3-series navigation satellite has arrived in Florida for final processing and fueling ahead of a launch currently targeted for April 29 aboard a SpaceX Falcon 9 rocket.

The James Webb Space Telescope should start returning its first scientific results by the end of 2019, and scientists recently announced a slate of observations selected to whet the appetites of astronomers who will use the multibillion-dollar facility well into the 2020s.

A command uplinked by mission control to resolve an error in the guidance system on the Israeli Beresheet moon lander inadvertently triggered a chain reaction that led to the shutdown of the probe’s main engine during descent to the lunar surface April 11, officials said this week.