Dark Energy and Dark Matter

Something must be out there amongst the blackness of space? Something must be making the Universe expand?

Current composition of the Universe:

Dark Energy : 70%
Dark Matter : 25%
Free Hydrogen and Helium : 4%
Stars : 0.5%
Neutrinos : 0.3%
Heavy Elements : 0.03%

Here's a pic to help:


You'll probably notice that these %'s don't add up to 100%. However, I fully trust this reliable source and this is the FACT.