好多年前 ， 物理學家費米問 ︰ 宇宙已經存在咗好長時間 而我哋相信宇宙入面有好多星球 我哋依家應該搵到外星生物嘅證據
Many years ago, physicist Fermi asked: The universe has been around for a long time, and we believe that there are many planets in the universe, and we should now find evidence of extraterrestrial life