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Lego® Creator 3-in-1 Space Exploration Telescope - 31378

Lego® Creator 3-in-1 Space Exploration Telescope - 31378

PRODUCT DESCRIPTION: A fun, rebuildable science-and-space set that gives renters three build options in one. Build an adjustable telescope on a tripod with a small solar system model, then rebuild the same pieces into a microscope or a UFO.
Set Size: 278 Pieces Age Rating: 8+
Theme: Creator 3-in-1 MSRP: $34.99
Release Date: 1/1/26 Retirement Date: Active
FEATURES: Features: Enjoy three builds in one rental—rebuild the set into a telescope, microscope, or UFO (one at a time), and use the included light brick with interchangeable “lens” tiles to project fun space images. Add the mini solar-system model with spinning planets and try a simple “mission” game: pick a planet, project a clue, then rebuild into the UFO for a “landing” finale. Note models can’t be built simultaneously.
Building Instructions: Our Single Set rentals are available as Digital builds or Screen-Free (add-on). Digital includes access to the LEGO® Builder app and/or a downloadable PDF of the instructions. Screen-Free includes the original printed instruction booklet. Please choose your instruction option below when selecting your rental plan.
This set is available through our Loop Packages or as a Single Set Rental. Single set rentals include free shipping both ways—keep it as long as you’d like, then return it when you’re ready for your next build. Rentals renew monthly and automatically stop when the set is returned and inspected.

Instructions: Space Exploration Telescope - 31378

Building Style
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Monthly Subscription Details

Build Instructions

Each box includes a QR code to access build instructions (PDF), or you can follow along digitally in the LEGO® Builder app. Upgrade to go screen-free with the original printed instruction booklet.

How Re-Looping Works

Your rental plan renews monthly. You can keep sets as long as you’d like, but each billing period includes one eligible rental shipment. Our Unlimited Plan includes 2 monthly shipping credits.

To be eligible for your next rental shipment:

-You must have an active monthly rental plan
-Your current rental must have been shipped 30+ days ago
-You must have returned at least 1 set using your prepaid return label
-Returns must have passed our inbound inspection for piece count and condition


Your next order will be processed within 2 business days of your renewal date, as long as you have returned at least 1 set. The number of sets returned is the number of new sets that will be processed.

How many sets ship monthly?

Your first box includes 3 sets:

  • Return 1 set → Receive 1 new set on your renewal date
  • Return 2 sets → Receive 2 new sets on your renewal date
  • Return all 3 sets → Receive 3 completely new builds on your renewal date

Once your returns are received and inspected, your next box is processed on your monthly renewal date.