http://arxiv.org/abs/0803.1987 Is dark energy from cosmic Hawking radiation? Authors: Jae-Weon Lee, Hyeong-Chan Kim, Jungjai Lee (Submitted on 13 Mar 2008) We suggest that dark energy is the Hawking radiation from a cosmic horizon. Despite of the extremely low Hawking temperature this dark energy could have the appropriate magnitude and the equation of state to explain the observed cosmological data, thank to its huge entropy proportional to the horizon area. If the horizon is an event horizon and the entropy of the radiation satisfies the holographic principle, then the radiation gives the holographic dark energy with the parameter $d\simeq 1$, as observed. Albeit simple, this model could explain many mysteries of dark energy in a consistent way.