The moon phase stickers are wrong and there is no way to rearrange them to the correct order. It would have been simple to either research the moon phases or make the stickers so they could be put in the correct order. It's infuriating. It was pretty simple to build and the instructions are clear. The ratios are pretty good and appreciate that the earth has an axial tilt. Would have been better if the sun was an actual build and not just two parts.

This is a fun and interesting build that really showcases what Technic can do when it thinks outside of the box. I built it with my young kids helping/watching and it was an interesting set both to build and to explain the seasons when it was done. Well done Lego!

My grandson was literally “ OVER THE MOON” when he opened the box with this Lego set inside. He thought I had used the empty box to wrap a different item!!! His delight was boundless! He focused entirely on the project and completed it in two days! WIN! Win!

With the big eclipse coming in another couple of weeks, I just had to buy this set. As an engineer, I truly appreciate the effort that went into this design. It was extremely impressive!! I only wish that it was designed to be expandable in a manner where other planets could be added in the future. That would have been beyond awesome!

He enjoyed the gearing and visual of the build. He did wish they had added more planets to the design. He like that it displayed the month and moon phase that was current to today's day and you could change it. He liked the earth was tilted on an angle to make it factual. The turntable below earth and the moon was cleaver.

This is one of the best Technic models that I have built. I love the complexity and the reality of the, hummm, planetary drive train. The box says 10+ but I think it would be very challenging for a 10-year old without assistance, especially in the later steps with the sun, earth and moon need to be lined up. The action is not exactly accurate but does illustrate the position of the three bodies in orbit. I have made one hack to it by replacing the yellow orb with a 3" LED light. Next step is to motorize the drive train with a heavily reduced gearing to simluate the days and moon phases.

This is a very cool set and very cool to build. However Lego missed the mark with the stupid stickers. Come on LEGO...Do better. You have this advertised as PRINTED graphics however as usual they are STICKERS and NOT PRINTED. Why Lie? This isn't going to deter me from getting other sets but you have to do better for your customers. Either be honest or do what it says.

The build is great. I personally would have liked more arrows on the direction model when multiple pieces are being added during a single step but that's not a huge issue. My biggest frustration with this set is with the moon phase stickers provided. The set is only correct for those who live in the southern hemisphere. As an educator I was excited to have this as decor in my classroom but since I live in the northern hemisphere I can't. Because of the inaccuracy of the model I don't feel like it was worth the money I paid for it. I hope in the future there are stickers for both hemispheres.

With the Eclipse coming we invested in the Lego Technic "Planet Earth and Moon in Orbit" so we could get a little hands on in trying to understand what's going on in the sky. It's a great build (lots of gears and moving parts). The engineering behind the set is very impressive. I moved the earth half way around the sun and counted 180ish earth rotations (aka 365 days in a year) You will also have a visual to help explain seasons and the phases of the moon (and probably more). NOTE: lots of reviewers were upset that the description says printed graphics, but the months and moon cycles were on stickers . . . The globe is the printed graphic.

This Technic build while fun was certainly not LEGOs best work. There are many MOCs that are “bricks” above this. The mechanism is great but there is no explanation of their logic system. The greebling is unnecessary - you want to show the mechanics. It wobbles and looks like it could tip. Finally the LEGO spheres are horrid; LEGO has done better prints and spheres.