Live coverage: Vega rocket launches with LISA Pathfinder

A Vega rocket lifted off from a tropical launch pad in French Guiana at 1351 GMT (8:51 a.m. EST) Monday with Gokturk 1, a sharp-eyed reconnaissance satellite built in France and owned by the Turkish armed forces.

SpaceX’s next Falcon 9 rocket launch, using a previously-flown first stage booster, took a step closer to liftoff Thursday with a countdown rehearsal culminating in ignition of the launcher’s nine Merlin main engines in a hold-down firing at pad 39A at NASA’s Kennedy Space Center in Florida.

Hardware problems that cropped up earlier this month on the Hubble Space Telescope, now approaching the 31st anniversary of its launch, are the latest signs the observatory is showing its age.