NASA Artemis Space Launch System Rocket

🏷️ 42221-1🎨 Technic📅 2026🧱 632 partsIntermediate

Witness the intricate mechanics of space exploration with the LEGO Technic NASA Artemis Space Launch System Rocket (42221-1). This detailed model, developed in collaboration with NASA and ESA, meticulously recreates the Artemis mission's multi-stage launch sequence. Activate the innovative crank mechanism to observe the solid rocket boosters separating from the core stage, followed by the detachment of the core stage itself. Continue the sequence to see the upper stage, complete with its engine module, the Orion spacecraft, and the launch abort system, separate for lunar orbit insertion. Four astronaut nanofigures accompany the rocket, which stands ready for display with captivating blue flame details and an informative panel. This set offers an authentic representation of a modern space launch.

Parts Inventory

🧱 632 parts
PartQty
Sticker Sheet for Set 42221-1

Sticker Sheet for Set 42221-1

10115267

Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle

Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle

11214

Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle

Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle

11214

12×
Technic Beam 1 x 5 Thin with Axle Holes on Ends

Technic Beam 1 x 5 Thin with Axle Holes on Ends

11478

String with End Studs 31L Overall

String with End Studs 31L Overall

14226c31

Technic Panel 3 x 11 x 1

Technic Panel 3 x 11 x 1

15458

Technic Axle 5 with Stop

Technic Axle 5 with Stop

15462

Tile Round 2 x 2 with Hole

Tile Round 2 x 2 with Hole

15535

Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle

Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle

18651

Technic Pin Connector Round 1L [Beam]

Technic Pin Connector Round 1L [Beam]

18654

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Build DNA

Parts inventory insights for NASA Artemis Space Launch System Rocket

632 pieces puts this build -2% against the average Technic set and +1% against the average 2026 release.

LEGOTECHNIC

Vs average Technic set

-2%-15 parts
This set632
Average set647

Average Technic set: 647 pieces across 450 other sets.

Vs average 2026 set

+1%+4 parts
This set632
Average set628

Average 2026 set: 628 pieces across 427 other sets.

Color profile

20different colors

Dominant color

Black

Black345x
55%
White76x
12%
Light Bluish Gray48x
8%
Dark Bluish Gray40x
6%

Unique parts

4.9 pieces per unique type

130

Repeat factor

Average pieces per unique type.

5x

Most used part

Technic Pin with Friction Ridges Lengthwise with No Center Slots

Technic Pin with Friction Ridges Lengthwise with No Center Slots91x

Results are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.

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Build Insights🧩130unique parts🎨20different colors📊31.6avg. parts per color🏆91×Technic Pin with Friction Ridges Lengthwise with No Center Slots