《地平线系列：神秘的暗能量》探索未知，揭示宇宙奥秘，激发人类无限想象。另类异族videosex

　　Horizon looks at dark energy - the mysterious force that is unexpectedly causing the universe's expansion to speed up. The effects of dark energy were discovered in 1998 but physicists still don't know what it is. Worse, its very existence calls into question Albert Einstein's general theory of relativity - the cornerstone of modern physics. The hunt for the identity of dark en... (展开全部)