How many pieces does the LEGO Space Exploration Telescope (31378-1) have?

The LEGO Space Exploration Telescope set (31378-1) contains 278 pieces. It was released in 2026 as part of the LEGO Creator theme.

How can I find missing parts for LEGO set 31378-1?

On BrickMissing you can check which parts from the LEGO Space Exploration Telescope (31378-1) you already own. Add your LEGO collection and we'll show exactly which of the 278 pieces you're missing and which you already have.

Can I build the LEGO Space Exploration Telescope with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 278 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Space Exploration Telescope from?

The LEGO Space Exploration Telescope (31378-1) belongs to the LEGO Creator theme. You can browse all Creator sets on BrickMissing to find more sets from this theme.

Space Exploration Telescope

🏷️ 31378-1•🎨 Creator•📅 2026•🧱 278 parts•Intermediate

The LEGO Creator 3-in-1 Space Exploration Telescope (31378-1) provides adaptable exploration with its 278 pieces. Construct a telescope on a tripod, featuring a solar system model with the sun and seven spinning planets. An integrated light brick projects images from three interchangeable lenses—depicting a planet, a star, or the Moon—onto any surface. The set rebuilds into a microscope, using its light brick to illuminate observed details. Alternatively, assemble a UFO model with antennae and flip-out legs for display, which beams light from underneath. This Creator set encourages scientific and cosmic exploration through its distinct models.

Parts Inventory

🧱 278 parts

Part	Color	Qty
Technic Pin Connector Hub with 2 Perpendicular Axles 10197	Dark Bluish Gray	3×
Bar Holder with Clip 11090	Black	10×
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Dark Azure	1×
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Black	2×
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Light Bluish Gray	3×
Tile, Star with Stud Holder, Pin Hole 11609	White	2×
Plate Round 4 x 4 with 2 x 2 Round Opening 11833	Black	2×
Plate Round 4 x 4 with 2 x 2 Round Opening 11833	White	2×
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] 14720	Black	2×
Slope Curved 2 x 2 x 2/3 15068	Black	6×

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Tile, Star with Stud Holder, Pin Hole	11609	White	2×
Plate Round 4 x 4 with 2 x 2 Round Opening	11833	Black	2×
Plate Round 4 x 4 with 2 x 2 Round Opening	11833	White	2×
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes]	14720	Black	2×
Slope Curved 2 x 2 x 2/3	15068	Black	6×
Technic Axle 5 with Stop	15462	Reddish Brown	1×
Tile Special 1 x 1 with Clip with Rounded Edges	15712	Black	2×
Brick Round 2 x 2, Pin Holes	17485	White	1×
Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle	18651	Black	3×
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)	18674	Black	2×
Brick Round 2 x 2 Sphere with Stud [Plain]	20953	Nougat	1×
Bar 2L with Towball	22484	Dark Bluish Gray	3×
Plate Round Half 4 x 8	22888	Medium Azure	2×
Plate Round Half 4 x 8	22888	Black	2×
Technic Pin Connector Hub Perpendicular 3L with 2 Pins	2393	Light Bluish Gray	2×
Plate 2 x 2 Corner	2420	Black	2×
Tile 1 x 4 with Groove	2431	Black	12×
Tile Special 1 x 2 with Handle	2432	Yellow	1×
Tile Special 1 x 2 with Handle	2432	Red	1×
Tile Special 1 x 2 with Handle	2432	Black	1×
Cylinder Half 2 x 4 x 2 with 1 x 2 Cutout	24593	White	5×
Tile 2 x 3	26603	Black	1×
Brick Special 1 x 1 with Studs on 2 Adjacent Sides	26604	Black	5×
Turntable 2 x 2 Female	27448	White	2×
Minifig Head, Globe, Bright Green Land print	28621pr0005	Black	1×
Brick 2 x 2	3003	Red	1×
Brick 1 x 1	3005	White	2×
Plate 2 x 2	3022	Black	3×
Plate 1 x 2	3023	Black	6×
Plate 1 x 1	3024	White	4×
Brick Round 2 x 2 x 2 Robot Body, Axle Holder '+' Orientation	30361c	White	1×
Plate Round Corner 4 x 4	30565	Dark Blue	4×
Brick Round 1 x 1 Open Stud	3062b	White	1×
Tile 1 x 2 with Groove	3069b	Dark Azure	1×
Technic Beam 2 x 3 Thick [90° Offset Centre Beam Hole]	3167	Dark Bluish Gray	1×
Technic Axle 2 Notched	32062	Red	1×
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced	32123b	Black	8×
Technic Gear 12 Tooth Double Bevel	32270	Black	2×
Technic Ball Joint	32474	Dark Azure	1×
Technic Ball Joint	32474	Tan	1×
Technic Ball Joint	32474	Red	1×
Technic Ball Joint	32474	Red	1×
Plate Round 1 x 1 with Hollow Stud and Horizontal Bar 1L	32828	Black	3×
Plate 1 x 8	3460	Black	6×
Plate 1 x 8	3460	Dark Azure	3×
Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]	3484	Black	2×
Plate Special 2 x 2 Splat Gear with 6 Teeth	35442	Black	2×
Plate Special 1 x 2 Rounded with 2 Open Studs	35480	White	1×
Weapon Chakram / Hoop Blade / Ring	35485	Black	1×
Weapon Chakram / Hoop Blade / Ring	35485	Pearl Gold	1×
Technic Axle 12	3708	Black	1×
Plate 1 x 4	3710	Dark Azure	3×
Technic Axle Pin without Friction Ridges Lengthwise	3749	Tan	2×
Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot	42924	Black	2×
Technic Axle Pin with Friction Ridges Lengthwise	43093	Black	2×
Technic Panel Dome 5 x 5 with Pin Holes	4412	Yellow	1×
Brick Special 1 x 1 with Studs on 2 Sides	47905	White	1×
Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs	48092	Black	4×
Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs	48092	Black	4×
Technic Plate Rotor 3 Blade with Smooth Ends, 6 Studs, 1 Bottom Ridge (Propeller)	51138	Light Bluish Gray	3×
Slope 30° 1 x 1 x 2/3 (Cheese Slope)	54200	Black	5×
Technic Axle Connector Smooth [with x Hole + Orientation]	59443	Black	2×
Cone 1 x 1 [Top Groove]	59900	Red	1×
Plate Round 4 x 4 with Pin Hole	60474	White	1×
Plate Special 1 x 2 with Handle on End [Closed Ends]	60478	Light Bluish Gray	6×
Window 1 x 2 x 2 Flat Front	60592	Black	3×
Glass for Window 1 x 2 x 2 Flat with Planet, Stars on Black Background print	60601pr0018	Trans-Clear	1×
Glass for Window 1 x 2 x 2 Flat with Crescent Moon on Black Background print	60601pr0019	Trans-Clear	1×
Glass for Window 1 x 2 x 2 Flat with Stars on Black Background print	60601pr0020	Trans-Clear	1×
Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip]	60897	Black	6×
Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip]	61252	Trans-Clear	2×
Light Brick 2 x 3 x 1 1/3 with Dark Bluish Gray Base [Yellow LED]	62930	Trans-Clear	1×
Bar 6L with Stop Ring	63965	Dark Bluish Gray	1×
Plate Special 4 x 4 with 2 x 2 Opening	64799	Black	1×
Weapon Hilt Symmetric	66909	Black	3×
Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides	67329	White	1×
Dome 1 x 1 x 2/3	6908	Light Nougat	1×
Technic Gear 20 Tooth with Axle Hole [+ Opening]	69779	Dark Azure	1×
Technic Brick 1 x 1 with Axle Hole	73230	Dark Azure	5×
Technic Panel Dome 5 x 5 with Axle Holes	7343	Yellow	1×
Bracket 1 x 1 - 1 x 2 Inverted	73825	Black	2×
Technic Gear Rack 1/4 Circle 6 x 6, 15 Teeth	78442	Black	2×
Plate Round Corner 2 x 2 with 1 x 1 Cutout	79491	White	2×
Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]	85080	White	28×
Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]	85080	Black	4×
Plate Round 1 x 1 with Open Stud	85861	Black	9×
Slope 30? 1 x 2 x 2/3	85984	White	2×
Dome Hemisphere 4 x 4	86500	Trans-Clear	1×
Plate 1 x 1 x 2/3 with Open Stud	86996	Black	2×
Bar 5L with Handle (Friction Ram)	87618	Black	5×
Bar 3L	87994	Black	3×
Brick Round 2 x 2 [Grill]	92947	Black	4×
Slope Curved 4 x 1 Double with No Studs	93273	Black	1×
Arm Skeleton [Bent / 2 Clips]	93609	Black	1×
Brick Round 2 x 2 Truncated Cone	98100	White	1×
Tile Round 1 x 1	98138	White	1×
Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot]	99563	Pearl Gold	2×

Build DNA

Parts inventory insights for Space Exploration Telescope

278 pieces puts this build -33% against the average Creator set and -56% against the average 2026 release.

LEGOCREATOR

Vs average Creator set

-33%-139 parts

This set278

Average set417

Average Creator set: 417 pieces across 562 other sets.

Vs average 2026 set

-56%-352 parts

This set278

Average set630

Average 2026 set: 630 pieces across 423 other sets.

Color profile

17different colors

Dominant color

Black

Black152x

55%

White58x

21%

Dark Azure15x

Light Bluish Gray14x

Unique parts

3.1 pieces per unique type

Repeat factor

Average pieces per unique type.

Most used part

Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]

32x

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

This site is not affiliated with or endorsed by the LEGO Group.

Build Insights🧩90unique parts🎨17different colors📊16.4avg. parts per color🏆32×Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style]

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