Jason 3 pre-launch news conference

The James Webb Space Telescope is at risk of another launch delay beyond the mission’s current target launch date in March 2021, the Government Accountability Office said this week.

Maintaining a brisk flight rate three days after its last launch, SpaceX sent a Falcon 9 booster powered by a reused first stage into orbit Wednesday evening from Florida with an Airbus-built communications satellite for SES and EchoStar.

A Soyuz rocket arrived at a launch pad Tuesday in Kazakhstan for liftoff later this week with a satellite to monitor natural disasters and track forest fires from orbit and 72 secondary payloads from Russia, the United States, Germany, Norway and Japan.