what is the universe?

http://rt.com/news/space-evidence-universe-hologram-195/

This is something that I have seen around the internet for a couple of days. The article is stating that the universe is a giant hologram. This shows that new things are being learned everyday. As time goes on technology increases and more things are developed. We also learn that what we may know about something may not be true. Lets see what else is going to be discover.