Earth is just a tiny spec in an infinitesimally large cosmos. It is easy to lose sight of this as we go about our day doing mundane things like studying, working, running errands, and building strange things with Arduino. It is great to take a step back every now and then to consider the immensity and possibilities of outer space.

In the Space Challenge we are asking you to consider the cosmos and post an Instructable that is in some way related to outer space. We're looking for projects grounded on Earth but that strive for the stars, but we would even settle for our neighbor, the moon. If the project is related to something outside Earth's atmosphere, or someday strives to exit it, then we want to see it!

A special judges prize will also be awarded for the project with the best use of Tinkercad. If you have never used it before, it's not too late to learn. It's free and easy!

The Space Challenge is closed.

Grand Prize


Tinkercad Judges Prizes (1)

The Tinkercad Judges Prize will be awarded for the best use of Tinkercad:
  • A $100 Amazon gift card
  • An Instructables Prize Pack

Grand Prize (1)

One Grand Prize winner will receive:
  • A $500 Amazon gift card
  • An Instructables Prize Pack

First Prize (5)

Five First Prize winners will receive:
  • A $100 Amazon gift card
  • An Instructables Prize Pack

Runner Up (10)

Ten Runner Up winners will receive:
  • A $50 Amazon gift card
  • An Instructables Prize Pack

Write an Instructable

Create a new Instructable that fits the guidelines outlined in the contest description above. To be eligible, Instructables must be published between Apr 2, 2018 and Apr 30, 2018 (11:59pm PT).


Upon publishing your Instructable you'll see checkboxes for open contests. Select Space Challenge. If you have entries currently eligible for entry, it will also show up by clicking "Enter this Contest" on the right side of this page.


Entries are accepted by Instructables staff within one business day Monday - Friday. What matters is the submission time, not acceptance time.


A panel of judges made up of Instructables staff and respected members of the community rate the finalists. The averages of the ratings determine the winners.


When the winners are decided they will be notified and announced here on the contest page.