Sort the following statements/descriptors into which phase of the Universe it best describes, Matter, Radiation, or Dark Energy:
Non-relativistic Matter
P=0
w=0
Two types: Baryonic and Dark
This constituent dominated between the Early Universe and the phase which is starting now.
Dark Energy
This constituent is beginning to dominate the Universe.
P=-(epsilon)
Could be Einstein's cosmological constant.
w=-1
Radiation (relativistic)
Two Types: Photons and Neutrinos
relativistic
This constituent dominated in the early Universe.
w=1/3
P=(1/3)(epsilon)
Possible answers
We aren't sure what it is.