Speaker：Karen J.Meech

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原视频

摘要

• On October 19, 2017, Pan-STARRS spotted an object moving rapidly between the stars, and this time the usual follow-up measurements of position and speed showed something completely different. By October 22nd, we had enough data to realize that this object wasn't from our solar system.
  2017年的10月19日，泛星计划发现了一个在星系间快速移动的物体，这一次，例行的位置和速度测量结果显示了完全不一样的结果。到10月22日，我们有了足够的数据 证明这个物体不是来自太阳系。

• In honor of it being discovered by a telescope in Hawaii, we consulted two experts on Hawaiian culture -- a Hawaiian navigator and a linguist -- to propose a name. And they suggested "'Oumuamua," which means scout or messenger from the distant past reaching out to us.
  因为发现它的望远镜是在夏威夷，于是我们找了两位夏威夷文化的专家， 一位夏威夷向导和一位语言学家来想一个名字。他们提议叫“奥陌陌”，意思是经过长途跋涉找到我们的侦察兵或者信使。

• So while it is rotating around its short axis, it's also rolling around the long axis and nodding up and down. This very energetic, excited motion is almost certainly the result of it being violently tossed out of its home solar system.
  它在绕自己短轴旋转的同时，也在绕长轴翻转，同时上下摇晃。这种有力的、激烈的运动形式，几乎可以肯定是因为它被猛烈地抛出了自己的太阳系。

• We think that 'Oumuamua may be more of a flattened oval.
  我们认为奥陌陌可能更像一个扁平的椭圆。

• Whatever it is, we believe it's a natural object, but we can't actually prove that it's not something artificial.
  无论原因是什么， 我们都相信它是自然形成的， 但我们也无法证明它不是人造的。

• More importantly, I think this visitor from afar has really brought home the point that our solar system isn't isolated. We're part of a much larger environment, and in fact, we may even be surrounded by interstellar visitors and not even know it.
  更重要的是，这位远道而来的访客证明了一点，我们的太阳系并不是孤立的。我们是一个更大世界的一部分， 实际上，我们周围可能有许多星际访客，而我们还没有察觉。