# LEGO 31378-1 — Space Exploration Telescope (2026)

Source: https://www.brickmissing.com/sets/31378-1-space-exploration-telescope
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

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.

## Set facts

- Set number: 31378-1
- Name: Space Exploration Telescope
- Theme: Creator › 3 in 1
- Released: 2026
- Pieces: 278
- Distinct part + colour lots: 102
- LEGO retail price: € 34,99
- Build difficulty: intermediate
- Repairability: 8.8% of this set's lots are hard to replace (9 of 102 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (102 lots, 278 pieces)

Prices are the official LEGO Pick a Brick price per individual part, where LEGO publishes one.

| Qty | Part | Colour | Part no. | LEGO element ID | LEGO price each |
| ---: | --- | --- | --- | --- | --- |
| 3 | Technic Pin Connector Hub with 2 Perpendicular Axles | Dark Bluish Gray | 10197 | 6005331 | €0,18 |
| 10 | Bar Holder with Clip | Black | 11090 | 6315887 | €0,12 |
| 1 | Brick Special 1 x 2 with 2 Studs on 1 Side | Dark Azure | 11211 | 6523387 | €0,13 |
| 2 | Brick Special 1 x 2 with 2 Studs on 1 Side | Black | 11211 | 6138173 | €0,13 |
| 3 | Slope Curved 2 x 1 No Studs [1/2 Bow] | Light Bluish Gray | 11477 | 6028813 | €0,06 |
| 2 | Tile, Star with Stud Holder, Pin Hole | White | 11609 | 6469041 | €0,07 |
| 2 | Plate Round 4 x 4 with 2 x 2 Round Opening | Black | 11833 | 6167800 | €0,27 |
| 2 | Plate Round 4 x 4 with 2 x 2 Round Opening | White | 11833 | 6392162 | €0,27 |
| 2 | Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] | Black | 14720 | 6390379 | €0,36 |
| 6 | Slope Curved 2 x 2 x 2/3 | Black | 15068 | 6053077 | €0,13 |
| 1 | Technic Axle 5 with Stop | Reddish Brown | 15462 | 6159763 | €0,11 |
| 2 | Tile Special 1 x 1 with Clip with Rounded Edges | Black | 15712 | 6335388 | €0,12 |
| 1 | Brick Round 2 x 2, Pin Holes | White | 17485 | 6218899 | €0,25 |
| 3 | Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle | Black | 18651 | 6089119 | €0,08 |
| 2 | Plate Special Round 2 x 2 with Center Stud (Jumper Plate) | Black | 18674 | 6195325 | €0,07 |
| 1 | Brick Round 2 x 2 Sphere with Stud [Plain] | Nougat | 20953 | 6592648 | — |
| 3 | Bar 2L with Towball | Dark Bluish Gray | 22484 | 6364352 | €0,08 |
| 2 | Plate Round Half 4 x 8 | Medium Azure | 22888 | 6138571 | €0,36 |
| 2 | Plate Round Half 4 x 8 | Black | 22888 | 6133200 | €0,36 |
| 2 | Technic Pin Connector Hub Perpendicular 3L with 2 Pins | Light Bluish Gray | 2393 | 6408168 | €0,29 |
| 2 | Plate 2 x 2 Corner | Black | 2420 | 242026 | €0,07 |
| 12 | Tile 1 x 4 with Groove | Black | 2431 | 243126 | €0,12 |
| 1 | Tile Special 1 x 2 with Handle | Yellow | 2432 | 243224 | €0,11 |
| 1 | Tile Special 1 x 2 with Handle | Red | 2432 | 243221 | €0,11 |
| 1 | Tile Special 1 x 2 with Handle | Black | 2432 | 243223 | €0,11 |
| 5 | Cylinder Half 2 x 4 x 2 with 1 x 2 Cutout | White | 24593 | 6249552 | €0,36 |
| 1 | Tile 2 x 3 | Black | 26603 | 6162892 | €0,11 |
| 5 | Brick Special 1 x 1 with Studs on 2 Adjacent Sides | Black | 26604 | 6187572 | €0,10 |
| 2 | Turntable 2 x 2 Female | White | 27448 | 6536567 | €0,12 |
| 1 | Minifig Head, Globe, Bright Green Land print | Black | 28621pr0005 | 6589143 | — |
| 1 | Brick 2 x 2 | Red | 3003 | 300321 | €0,13 |
| 2 | Brick 1 x 1 | White | 3005 | 300501 | €0,07 |
| 3 | Plate 2 x 2 | Black | 3022 | 302226 | €0,10 |
| 6 | Plate 1 x 2 | Black | 3023 | 302326 | €0,08 |
| 4 | Plate 1 x 1 | White | 3024 | 302401 | €0,06 |
| 1 | Brick Round 2 x 2 x 2 Robot Body, Axle Holder '+' Orientation | White | 30361c | 4194010 | €0,44 |
| 4 | Plate Round Corner 4 x 4 | Dark Blue | 30565 | 6023154 | €0,18 |
| 1 | Brick Round 1 x 1 Open Stud | White | 3062b | 306201 | €0,06 |
| 1 | Tile 1 x 2 with Groove | Dark Azure | 3069b | 6151659 | €0,07 |
| 1 | Technic Beam 2 x 3 Thick [90° Offset Centre Beam Hole] | Dark Bluish Gray | 3167 | 6475314 | €0,56 |
| 1 | Technic Axle 2 Notched | Red | 32062 | 4142865 | €0,07 |
| 8 | Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced | Black | 32123b | 6536559 | €0,04 |
| 2 | Technic Gear 12 Tooth Double Bevel | Black | 32270 | 4177431 | €0,18 |
| 1 | Technic Ball Joint | Dark Azure | 32474 | 6412745 | €0,12 |
| 1 | Technic Ball Joint | Tan | 32474 | 6488494 | €0,12 |
| 1 | Technic Ball Joint | Red | 32474 | 6295155 | €0,12 |
| 1 | Technic Ball Joint | Red | 32474 | 4290714 | €0,12 |
| 3 | Plate Round 1 x 1 with Hollow Stud and Horizontal Bar 1L | Black | 32828 | 6196548 | €0,05 |
| 6 | Plate 1 x 8 | Black | 3460 | 346026 | €0,18 |
| 3 | Plate 1 x 8 | Dark Azure | 3460 | 6210227 | €0,18 |
| 2 | Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip] | Black | 3484 | 6439039 | €0,07 |
| 2 | Plate Special 2 x 2 Splat Gear with 6 Teeth | Black | 35442 | 6306064 | €0,21 |
| 1 | Plate Special 1 x 2 Rounded with 2 Open Studs | White | 35480 | 6210272 | €0,07 |
| 1 | Weapon Chakram / Hoop Blade / Ring | Black | 35485 | 6391688 | €0,16 |
| 1 | Weapon Chakram / Hoop Blade / Ring | Pearl Gold | 35485 | 6286094 | €0,18 |
| 1 | Technic Axle 12 | Black | 3708 | 370826 | €0,27 |
| 3 | Plate 1 x 4 | Dark Azure | 3710 | 6133728 | €0,12 |
| 2 | Technic Axle Pin without Friction Ridges Lengthwise | Tan | 3749 | 4666579 | €0,06 |
| 2 | Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot | Black | 42924 | 6299413 | €0,10 |
| 2 | Technic Axle Pin with Friction Ridges Lengthwise | Black | 43093 | 4206482 | €0,06 |
| 1 | Technic Panel Dome 5 x 5 with Pin Holes | Yellow | 4412 | 6592650 | — |
| 1 | Brick Special 1 x 1 with Studs on 2 Sides | White | 47905 | 4626882 | €0,11 |
| 4 | Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs | Black | 48092 | 6252902 | €0,30 |
| 4 | Brick Round Corner 4 x 4 Macaroni Wide with 3 Studs | Black | 48092 | 6469255 | €0,30 |
| 3 | Technic Plate Rotor 3 Blade with Smooth Ends, 6 Studs, 1 Bottom Ridge (Propeller) | Light Bluish Gray | 51138 | 6307999 | €0,44 |
| 5 | Slope 30° 1 x 1 x 2/3 (Cheese Slope) | Black | 54200 | 4504382 | €0,06 |
| 2 | Technic Axle Connector Smooth [with x Hole + Orientation] | Black | 59443 | 4512363 | €0,06 |
| 1 | Cone 1 x 1 [Top Groove] | Red | 59900 | 6482735 | €0,05 |
| 1 | Plate Round 4 x 4 with Pin Hole | White | 60474 | 4515347 | €0,17 |
| 6 | Plate Special 1 x 2 with Handle on End [Closed Ends] | Light Bluish Gray | 60478 | 4515369 | €0,06 |
| 3 | Window 1 x 2 x 2 Flat Front | Black | 60592 | 4521439 | €0,17 |
| 1 | Glass for Window 1 x 2 x 2 Flat with Planet, Stars on Black Background print | Trans-Clear | 60601pr0018 | 6589144 | — |
| 1 | Glass for Window 1 x 2 x 2 Flat with Crescent Moon on Black Background print | Trans-Clear | 60601pr0019 | 6589146 | — |
| 1 | Glass for Window 1 x 2 x 2 Flat with Stars on Black Background print | Trans-Clear | 60601pr0020 | 6589145 | — |
| 6 | Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] | Black | 60897 | 6330189 | €0,08 |
| 2 | Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] | Trans-Clear | 61252 | 6429708 | €0,13 |
| 1 | Light Brick 2 x 3 x 1 1/3 with Dark Bluish Gray Base [Yellow LED] | Trans-Clear | 62930 | 6555880 | €5,41 |
| 1 | Bar 6L with Stop Ring | Dark Bluish Gray | 63965 | 6170420 | €0,08 |
| 1 | Plate Special 4 x 4 with 2 x 2 Opening | Black | 64799 | 6058118 | €0,29 |
| 3 | Weapon Hilt Symmetric | Black | 66909 | 6331084 | €0,10 |
| 1 | Brick Special 1 x 2 x 1 2/3 with 8 Studs on 3 Sides | White | 67329 | 6312480 | €0,36 |
| 1 | Dome 1 x 1 x 2/3 | Light Nougat | 6908 | 6573537 | €0,10 |
| 1 | Technic Gear 20 Tooth with Axle Hole [+ Opening] | Dark Azure | 69779 | 6396480 | €0,35 |
| 5 | Technic Brick 1 x 1 with Axle Hole | Dark Azure | 73230 | 6446031 | €0,17 |
| 1 | Technic Panel Dome 5 x 5 with Axle Holes | Yellow | 7343 | 6595303 | €0,90 |
| 2 | Bracket 1 x 1 - 1 x 2 Inverted | Black | 73825 | 6335317 | €0,10 |
| 2 | Technic Gear Rack 1/4 Circle 6 x 6, 15 Teeth | Black | 78442 | 6451564 | €1,20 |
| 2 | Plate Round Corner 2 x 2 with 1 x 1 Cutout | White | 79491 | 6499714 | €0,17 |
| 28 | Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] | White | 85080 | 4567449 | €0,10 |
| 4 | Brick Round Corner 2 x 2 Macaroni with Stud Notch and Reinforced Underside [New Style] | Black | 85080 | 4567436 | €0,10 |
| 9 | Plate Round 1 x 1 with Open Stud | Black | 85861 | 6168646 | €0,04 |
| 2 | Slope 30? 1 x 2 x 2/3 | White | 85984 | 4547489 | €0,07 |
| 1 | Dome Hemisphere 4 x 4 | Trans-Clear | 86500 | 6551130 | €0,47 |
| 2 | Plate 1 x 1 x 2/3 with Open Stud | Black | 86996 | 6388352 | €0,08 |
| 5 | Bar 5L with Handle (Friction Ram) | Black | 87618 | 4623113 | €0,18 |
| 3 | Bar 3L | Black | 87994 | 6093525 | €0,06 |
| 4 | Brick Round 2 x 2 [Grill] | Black | 92947 | 6024730 | €0,12 |
| 1 | Slope Curved 4 x 1 Double with No Studs | Black | 93273 | 4613153 | €0,15 |
| 1 | Arm Skeleton [Bent / 2 Clips] | Black | 93609 | 6326681 | €0,11 |
| 1 | Brick Round 2 x 2 Truncated Cone | White | 98100 | 4649167 | €0,15 |
| 1 | Tile Round 1 x 1 | White | 98138 | 6284572 | €0,04 |
| 2 | Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] | Pearl Gold | 99563 | 6207933 | €0,05 |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/31378-1-space-exploration-telescope
- Inventory data is based on official LEGO inventories via the Rebrickable catalog, updated daily.
- Part images, minifigure lists and related sets are on the set page: https://www.brickmissing.com/sets/31378-1-space-exploration-telescope