Step 1: Prepare a piece of cardboard.

Step 2: Fold the cardboard in half.

Step 3: Unfold the folded cardboard.

Step 4: Fold the cardboard in half again.

Step 5: Unfold the folded cardboard.

Step 6: Fold the upper half of the cardboard downward, and pay attention to the number of folds.

Step 7: Turn the origami over.

Step 8: Fold the right part on the central vertical line, and pay attention to the central vertical line.

Step 9: Align the left part with the central vertical line, and pay attention to the alignment with the central vertical line.

Step 10: Align the right part with the central vertical line again, paying attention to the alignment with the central vertical line.

Step 11: Align the left part with the central vertical line again, paying attention to the alignment with the central vertical line.

Step 12: Fold the right part outward, being careful not to fold too much.

Step 13: Fold the left part outward, being careful not to fold too much.

Finally, turn the origami over and our rocket will be finished!

Rocket is an aircraft propelled by the reaction force generated by the rocket engine injecting working medium. It carries all propellants by itself, does not rely on external working medium to generate thrust, and can fly into or out of dense atmosphere, so it is a vehicle for space flight. Rockets are divided into sounding rockets and launch vehicles according to their uses.