使得这个天体（被称为SN 1979C）如此特别的事实在于多年以来它已经被一系列轨道上的X射线望远镜所观察研究，最近的观测是钱德拉X射线天文台所做的。
What makes this one -- dubbed SN 1979C -- special is that it has been observed over the years with a series of orbiting x-ray telescopes, most lately the Chandra X-Ray Observatory.
使得这个天体（被称为SN 1979C）如此特别的事实在于多年以来它已经被一系列轨道上的X射线望远镜所观察研究，最近的观测是钱德拉X射线天文台所做的。
What makes this one -- dubbed SN 1979C -- special is that it has been observed over the years with a series of orbiting x-ray telescopes, most lately the Chandra X-Ray Observatory.
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