Current Prices
About LEGO Space Exploration Telescope
Building this 278-piece set offers three distinct construction experiences, each with its own mechanical features and interactive elements. The telescope model includes a functioning light projection system, while the microscope features an illumination mechanism, and the UFO design incorporates a directional light beam.
The main telescope model stands 27 cm tall and includes a detailed solar system display alongside the viewing apparatus. Three interchangeable decorated lenses - featuring planet, star and Moon designs - can either project images onto surfaces or be viewed through the microscope build. Each model incorporates a light brick with push-button activation, powered by included batteries.
Interactive Features
The set's lighting system serves different functions across the three builds. The telescope projects the lens designs as images, the microscope illuminates specimens for viewing, and the UFO creates a focused light beam effect. This electronic component adds a functional element beyond basic brick construction.
The three models cannot be built simultaneously as they share the same piece collection. Suitable for ages 8 and above, the set encourages rebuilding and exploration of different scientific instruments and space-themed designs through its 3-in-1 format.
Where to Buy LEGO Space Exploration Telescope for the Best Price
We've been tracking prices for this set since December 2025. The recommended retail price is £29.99. It's currently available from 2 retailers, with Lego offering the best price at £29.99. The lowest price we've ever recorded was £29.99 at Lego in December 2025. Over its tracked history, prices have ranged from £29.99 to £30.00. This set is expected to retire end of this year, so prices may increase as availability decreases.
Set Details
- Set Number
- 31378
- Pieces
- 278
- Theme
- Creator 3-in-1
- RRP
- £29.99
- Price per Piece
- 0.11p






