![](https://image.tmdb.org/t/p/w342/6IY8bmJcUGmgcB9ERnx8hLw7Qz5.jpg)
The 'Bots blast off into outer space to learn how planets are made -- and what they're made of. Zoe Saldana guest-stars as an astronomy professor.
![](https://image.tmdb.org/t/p/w300/ArI6UxeDPUv1h1OZeIccZlGXQP2.jpg)
![](https://image.tmdb.org/t/p/w300/lhEskyo3wmHyD0aTmLr1gFvHI28.jpg)
![](https://image.tmdb.org/t/p/w300/947dkEryFtsyO0pNlVRJV53ZbEb.jpg)
Other episodes for this season
![How Do You Make Music?](https://image.tmdb.org/t/p/w300/7JzDbt29Vngmkmxt9norxNl7mtH.jpg)
![Where Do Planets Come From?](https://image.tmdb.org/t/p/w300/sAV85pmpflpYQNLmfIPIpRmPjD2.jpg)
![Why Do People Look Different?](https://image.tmdb.org/t/p/w300/qRtR3AofVpoVajqDlAXXIQvgXQP.jpg)
![Why Do We Have to Recycle?](https://image.tmdb.org/t/p/w300/xsrmkD2tJpN3philKG4e9ltrb6u.jpg)
![How Do Cell Phones Work?](https://image.tmdb.org/t/p/w300/pOKuZBeQI4VGQbv9YDv94dV67AL.jpg)
![What Happens When You Flush the Toilet?](https://image.tmdb.org/t/p/w300/659geCVZ46O9RlriYcJGpy5sQ2H.jpg)
![Where Does Chocolate Come From?](https://image.tmdb.org/t/p/w300/vdYGm4DctUbiUsK1dT6r6qpNrIy.jpg)
![How Do Eyes See?](https://image.tmdb.org/t/p/w300/7wDqv6Q05RzBxYCbSKS9tyDPWv9.jpg)
The 'Bots blast off into outer space to learn how planets are made -- and what they're made of. Zoe Saldana guest-stars as an astronomy professor.