SpaceX just stacked its Starship megarocket to prepare for the vehicle's seventh test flight, which is scheduled for Jan. 13.

SpaceX is also flying rudimentary catch fittings on Starship to test their thermal performance on reentry. The ship will fly a more demanding trajectory during descent to probe the structural limits of the redesigned flaps at the point of maximum entry dynamic pressure, according to SpaceX.

Starship is scheduled to launch from Starbase on Monday (Jan. 13) at 5:00 p.m. EST (2200 GMT). It will be the seventh test flight for the giant rocket, which SpaceX is developing to help humanity settle Mars and achieve a variety of other exploration feats.