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 8.8% repair risk 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.

View at LEGO.com € 34,99→ lego.com

31378-1

3D build progress

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Parts Inventory

🧱 278 parts

Part	Color	Qty	LEGO price each
Technic Pin Connector Hub with 2 Perpendicular Axles 10197	Dark Bluish Gray	3×	€0,18 View at LEGO → View
Bar Holder with Clip 11090	Black	10×	€0,12 View at LEGO → View
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Dark Azure	1×	€0,13 View at LEGO → View
Brick Special 1 x 2 with 2 Studs on 1 Side 11211	Black	2×	€0,13 View at LEGO → View
Slope Curved 2 x 1 No Studs [1/2 Bow] 11477	Light Bluish Gray	3×	€0,06 View at LEGO → View
Tile, Star with Stud Holder, Pin Hole 11609	White	2×	€0,07 View at LEGO → View
Plate Round 4 x 4 with 2 x 2 Round Opening 11833	Black	2×	€0,27 View at LEGO → View
Plate Round 4 x 4 with 2 x 2 Round Opening 11833	White	2×	€0,27 View at LEGO → View
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] 14720	Black	2×	€0,36 View at LEGO → View
Slope Curved 2 x 2 x 2/3 15068	Black	6×	€0,13 View at LEGO → View
Technic Axle 5 with Stop 15462	Reddish Brown	1×	€0,11 View at LEGO → View
Tile Special 1 x 1 with Clip with Rounded Edges 15712	Black	2×	€0,12 View at LEGO → View

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Repairability

Can you fix Space Exploration Telescope if a piece goes missing?

8.8%Moderate repair risk

easy to fixguard this box

9 of the 102 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.

Theme average

2.3%

All sets

6.7%

Hardest to replace

Brick Round 2 x 2 Sphere · Nougat · only this setMinifig Head, Globe, Bright Green Land p… · Black · only this setTechnic Panel Dome 5 x 5 · Yellow · only this set

How we calculate this →