Space Exploration Telescope

Space Exploration Telescope (31378-1) is a set in the Creator 3-in-1 theme, released in 2026. It has 278 pieces.

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Number:31378-1
Released:January 2026
Pieces:278
Box size:22.2 × 26.2 × 6.2 cm
Box weight:478 g
Theme:Creator 3-in-1

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 36.65 USD, taken from 30 days with a price on record.

Since 9/25/2026 the lowest shop price has fallen from 41.93 USD to 36.80 USD, by 12 % (based on 40 days with a price on record).

LEGO expects to retire this set in December 2026.

Product details

Number: 31378-1
Name: Space Exploration Telescope
Theme: Creator › Creator 3-in-1
Released: January 2026
Launched: January 2026
Retires: December 2026 (expected)
Pieces: 278
RRP: ≈ 32.20 USD (44.99 CAD) (Canada)≈ 39.24 USD (34.99 EUR) (Germany)≈ 40.25 USD (29.99 GBP) (United Kingdom)34.99 USD (United States)
Price per piece: ≈ 0.116 USD (0.162 CAD) (Canada)≈ 0.141 USD (0.126 EUR) (Germany)≈ 0.145 USD (0.108 GBP) (United Kingdom)0.126 USD (United States)
Best price (30 days): 36.65 USD
Price per piece (best offer): 0.132 USD
Barcodes from shop data, not confirmed: EAN-13 5702018054727

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

BrickLink market data

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Description from LEGO.com

LEGO® Creator 3 in 1 rebuildable space and science toy

Read the full description

Boys and girls ages 8 and up can indulge their passion for science and space with this LEGO® Creator 3 in 1 Space Exploration Telescope (31378) building set. This detailed STEM toy offers 3 different building options with the same set of bricks.Kids can choose to build an adjustable telescope toy on a tripod with a solar system model featuring the sun and 8 planets that can be spun around. This can be rebuilt into an adjustable microscope toy or a UFO model with posable antennae and legs that flip out to display it.Each space toy includes a light brick (batteries included), which kids can activate by pushing a button to project images from the telescope onto a surface, illuminate images on the microscope or beam a light from underneath the UFO. There are 3 interchangeable decorated lenses, with images of a planet, a star and the Moon to project from the telescope or view inside the microscope. Please note models cannot be built simultaneously. Set contains 278 pieces.

Source: LEGO Shop Advertising

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Pricing

Best price ever≈ 36.65 USD (144.99 PLN) Advertising Sealed · gross · LEGO® Shop (PL) · seen 10/28/2026

Current best offer≈ 36.80 USD (144.99 PLN) Advertising Sealed · gross · LEGO® Shop (PL) · seen 11/3/2026 In stock at LEGO

Price history

Lowest shop price now36.80 USD
Lowest ever 36.65 USD

Each day's lowest price among the shops' current offers, including VAT. A price in another currency is converted at the ECB reference rate of its day.

Monthly lows as a table

Month	Lowest price
November 2026	36.78 USD
October 2026	36.65 USD
September 2026	41.75 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition

Nobody has sold this set recently.

Sources LEGO® Shop (FR): 32 · Proshop: 32 · LEGO® Shop (DE): 26 · LEGO® Shop (BE): 25 · LEGO® Shop (CZ): 25 · LEGO® Shop (GB): 25 · LEGO® Shop (AT): 24 · LEGO® Shop (CH): 24 · LEGO® Shop (DK): 24 · LEGO® Shop (ES): 24 · LEGO® Shop (FI): 24 · LEGO® Shop (GR): 24 · LEGO® Shop (HU): 24 · LEGO® Shop (IE): 24 · LEGO® Shop (IT): 24 · LEGO® Shop (LU): 24 · LEGO® Shop (NL): 24 · LEGO® Shop (NO): 24 · LEGO® Shop (PL): 24 · LEGO® Shop (PT): 24 · LEGO® Shop (RO): 24 · LEGO® Shop (SE): 24 · LEGO® Shop (SK): 23 · LEGO® Shop (US): 22 · LEGO® Shop (BR): 16

Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

Canada ≈ 32.20 USD (44.99 CAD) unknown tax basis Available since 12/3/2025 — still on sale as far as we know.Recorded by BrickDb since 10/16/2026

Germany ≈ 39.24 USD (34.99 EUR) gross Available since 12/3/2025 — still on sale as far as we know.Recorded by BrickDb since 10/16/2026

United Kingdom ≈ 40.25 USD (29.99 GBP) gross Available since 12/3/2025 — still on sale as far as we know.Recorded by BrickDb since 10/16/2026

United States 34.99 USD net Available since 12/3/2025 — still on sale as far as we know.Recorded by BrickDb since 10/16/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

111 inventory lines

Catalogue image of the part Technic Pin Connector Hub with 2 Perpendicular Axles

Technic Pin Connector Hub with 2 Perpendicular Axles 10197· Dark Bluish Gray

×3

Catalogue image of the part Bar Holder with Clip

Bar Holder with Clip 11090· Black

×10

Catalogue image of the part Brick Special 1 x 2 with 2 Studs on 1 Side

Brick Special 1 x 2 with 2 Studs on 1 Side 11211· Black

×2

Brick Special 1 x 2 with 2 Studs on 1 Side 11211· Dark Azure

×1

Catalogue image of the part Brick Curved 2 x 1 No Studs [1/2 Bow]

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Light Bluish Gray

×3

Catalogue image of the part Tile, Star with Stud Holder, Pin Hole

Tile, Star with Stud Holder, Pin Hole 11609· White

×2

Catalogue image of the part Plate Round 4 x 4 with 2 x 2 Round Opening

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

Catalogue image of the part Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes]

Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] 14720· Black

×2

Catalogue image of the part Brick Curved 2 x 2 x 2/3

Brick Curved 2 x 2 x 2/3 15068· Black

×6

Catalogue image of the part Technic Axle 5 with Stop

Technic Axle 5 with Stop 15462· Reddish Brown

×1

Catalogue image of the part Tile Special 1 x 1 with Clip with Rounded Edges

Tile Special 1 x 1 with Clip with Rounded Edges 15712· Black

×2

Catalogue image of the part Brick Round 2 x 2, Pin Holes

Brick Round 2 x 2, Pin Holes 17485· White

×1

Catalogue image of the part Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle

Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle 18651· Black

×3

Catalogue image of the part Plate Special Round 2 x 2 with Center Stud (Jumper Plate)

Plate Special Round 2 x 2 with Center Stud (Jumper Plate) 18674· Black

×2

Catalogue image of the part Brick Round 2 x 2 Sphere with Stud [Plain]

Brick Round 2 x 2 Sphere with Stud [Plain] 20953· Nougat

×1

Same theme, piece count within 15 %

Similar sets

Space Exploration Telescope

In numbers

Product details

BrickLink market data

Description from LEGO.com

Can I build this?

Pricing

Price history

Latest price from each shop

On eBay

Recommended retail price

Building instructions

Parts in this set

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