1. The universe appears to be expanding. The BB theory suggests that it has been expanding for nearly 14 billion years, due to a mysterious "Dark Energy". Where does this energy come from? 2. The expansion of the universe is causing light from distant galaxies to redshift to longer wavelengths. The energy of a photon of light is proportional to its wavelength. Therefore, cosmic redshift appears to reduce the energy of electromagnetic radiation. Where does this energy go? Surely there isn't enough energy from redshifting of radiation to cause the universe to expand. I must conclude that the BB theory violates the First Law of Thermodynamics - Conservation of Energy: Energy cannot be created or destroyed, only transferred or transformed.