ENJOY THE UNIVERSE'S BEST SPACE VIDEOS
The physics of the universe
Our solar system
Beyond our solar system
The Big Questions
Exploring space
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RECOMMENDED LESSON
How small are we in the scale of the universe? - Alex Hofeldt
In 1995, scientists pointed the Hubble Telescope at an area of the sky near the Big Dipper. The location was apparently empty, and the whole endeavor was risky – what, if anything, was going to show up?
What causes sunspots on the sun?
- aVolcanic eruptions on the sun
- bFluctuations in the sun’s magnetic activity
- cDebris passing in front of the sun
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.