The unfolding of the BlueWalker 3's giant flat-panel antenna array resulted in a satellite 40 times as bright, outshining most stars.
The imminent launch of a BlueWalker satellite, with a giant phased array antenna, portends a brightening night sky. Amateur astronomers can help record these changes with the goal of mitigating them.
Changes to the design of Starlink satellite spacecraft have made them brighter again, though still dimmer than the original design.
Measurements of Starlink's "VisorSat" show SpaceX has succeeded in making a less reflective satellite. But it's still visible from dark-sky areas.