This program is offered by the Friends of Arlington's David M. Brown Planetarium.

There are still many aspects of the universe that we don't fully understand. 
According to all observations, there is far more mass in the universe than what we can actually see. We call this mysterious mass “dark matter”. But what is it? How does it work? 
From following protons racing through the world’s largest particle collider to up-close views of the Big Bang and emergent cosmos, join scientists on a journey in the search for dark matter.  

Duration: 27 minutes
Recommended for general audiences (best for age 9 & above)