Main content
What is dark energy?
Dark energy makes up 70% of our Universe. And yet, we know very little about it. What we do know is that it is a force causing our Universe to expand at an accelerating rate. Dr Renato Coasta from the University of Cape Town explains this concept to Marnie Chesterton with a balloon.
(Photo: Space, stars and nebula on a purple abstract background. Credit: Getty Images)
Duration:
This clip is from
More clips from CrowdScience
-
What was the Moon like at its birth?
Duration: 01:52
-
Do girls or boys mature faster?
Duration: 01:12
-
How does an animal cross the road?
Duration: 01:54
-
What happens when a robot has inner speech?
Duration: 03:31