Following an aborted launch attempt last week in which several engines failed to ignite at liftoff, SpaceX’s Starship megarocket is back on the launchpad in Starbase, Texas. A 90-minute launch window opens at 6:45 p.

SpaceX is now targeting Thursday (July 23) for Flight 13 of its giant Starship rocket, after the first launch attempt aborted at the last second on July 16.

SpaceX stock is sinking ahead of a Starship test flight that could make or break the company's plan to retire Falcon 9, and Rocket Lab and AST SpaceMobile are getting dragged down with it. Here is what investors need to watch before tonight's launch window opens.

Airbus plans to flight test an experimental high-aspect-ratio wing extension on an A321neo by 2029 as part of its Wing of Tomorrow research program. Airbus said July 21 that it will design, build and flight test full-scale wing extensions over the next three years to “evaluate how the different wing geometries perform in real flight conditions.