The girl handbook refers the girls to the Indianapolis Children’s Museum website. They offer a program “Cosmic Quest” which allows you to build an online version.
Lily was able to find the Indianapolis Children’s Museum website with little difficulty (here). However, she did not find Cosmic Quest in the children’s section. I thought I would help you locate the program – It is in the Educator’s section – Or can be found here.
I hope this is helpful to you.
NOTE: The requirements have been simplified here. Please be sure to read the full text in the Girl Handbook to make sure you fully understand the requirements.