Once in space, Rex asks R2-D2 to make the jump to lightspeed as well, but accidentally overshoots the ship's hyperdrive, and passes the Endor moon, and instead gets caught inside a comet cluster.
Rex asks R2-D2 to make the jump to lightspeed as well. This is once in space. Rex accidentally overshoots the ship's hyperdrive. This is once in space. Rex passes the Endor moon. This is once in space. Rex gets caught inside a comet cluster. This was once in space.