億萬年前的宇宙「大爆炸」，令一切四散飛揚。理論上，引力會令星系停止移離，物質最終亦會再次出現坍縮現象。然而，叫人驚訝的事實卻是，各星系均以更快速度彼此移離！以我們現時掌握的物理學知識，這是個無從解釋的現象；不過，理論家似乎對此已有點頭緒，關鍵就在「暗能量」三字。據說，宇宙約70%是由暗能量組成。我們雖然對其所知極少，但科學家已在進行衛星和實驗室試驗，期望得出更多資料。講者將根據科學界現時掌握的資料，介紹暗能量的性質、它對宇宙其他物質的影響，以及人類探索這股神秘力量的各種計劃。
Science Interactive lecture: The dark side of the universe
Billions of years ago the Big Bang sent everything flying apart. In theory, gravity should stop galaxies from moving apart and matter should eventually re-collapse on itself. Surprisingly, we have learnt that galaxies are actually moving apart with ever-increasing speed. Nothing in our current knowledge of physics can explain this, but theorists are developing a solution: dark energy. Roughly 70% of our universe is comprised of dark energy and yet so little is known about it, but satellite and laboratory experiments are under way. The speaker will describe what we currently know about the nature of dark energy, how it affects other matter in the universe and what plans we have for observing this mysterious force.
時間：
2016.03.14(一) 16::00 ~ 17:15
2016.03.15(二) 14::00 ~ 15:15
地點：香港科學館演講廳
講者：Dr. Clare Burrage (英國諾定咸大學)
語言：英語
免費講座，參加者可預先登記
【訊息由張詠倫提供】
此活動由香港科學館主辦。
