The physics of the universe
SEE ALL![](https://i.ytimg.com/vi/hd8tYiLSmn0/0.jpg)
![](https://i.ytimg.com/vi/r5Pcqkhmp_0/0.jpg)
![](https://i.ytimg.com/vi/S3i6tJ4XNqA/0.jpg)
Our solar system
SEE ALLBeyond our solar system
SEE ALL![](https://i.ytimg.com/vi/I2apGYUX7Q0/0.jpg)
![](https://i.ytimg.com/vi/qY1R0UBBZk0/0.jpg)
![](https://i.ytimg.com/vi/DmUiCweDic4/0.jpg)
The Big Questions
SEE ALL![](https://i.ytimg.com/vi/I2apGYUX7Q0/0.jpg)
![](https://i.ytimg.com/vi/6AnLznzIjSE/0.jpg)
Exploring space
SEE ALL![Certificate of Achievement](https://www.space-ed.org/assets/certificates/certificate-space-ed-example-en-3bd205b8ed318a4224f6dc60e07daa44f59eaf54.jpg)
Earn a certificate
Get a certificate for completing any 30 lessons. Here's how:
- Make sure you are signed into your Space Ed account. Register if you don't already have an account.
- To complete a lesson, WATCH the video and finish all the questions in the THINK section.
- Complete any 30 lessons - you'll get a on each lesson you complete.
That's it! You will get your certificate in an email.