At least one supernova occurs per decade in our galaxy.
每十年至少有一颗超新星在我们的银河系中出现。
A bluish ribbon of light stretching from left to right across the picture might be a knot of gas ejected by the supernova.
一个从左延伸至右穿过整幅图片的浅蓝色光可能是由超新星喷发出的气体的集结体。
Now consider a supernova explosion.
现在考虑一次超新星爆发。
This is his seventh supernova discovery.
这是保罗·格雷第七次发现超新星。
Have you ever seen picture of a supernova?
你见过超新星的照片么？
BLOCK: And the supernova has a name now, right, 2010lt?
布洛克：而且这颗超新星现在已经有了名字，2010lt，是吗？
The star then explodes in a so-called Type II supernova.
这颗恒星随后发生爆炸，成为II型超新星。
This image shows a part of the circular supernova remnant known as RCW 86.
这张照片显示的是环形超新星残骸的一部分，名叫RCW86。
Future fireworks are forthcoming, for the star will someday explode as a supernova.
这颗恒星总有一天会爆炸成为超新星，未来即将在这里看到更美的空中烟火。
Most recently, those crazy scientists have even recreated a 'supernova' in a test tube!
最近，那些疯狂的科学家们甚至在试管里搞出一个“超新星”！
It is the remnant of a supernova that was recorded by Chinese and Arab astronomers in 1054.
早在1054年，中国和阿拉伯天文学家就有关于它是超新星残余的记载。
BLOCK: Do you stop and think, Kathryn, that this supernova is 240 million light-years away?
布洛克：凯瑟琳，你有没有停下来想过，这颗超新星远在2亿4千万光年之外？
In the 1950s, the remnants of the supernova could be seen again with the help of telescopes.
在二十世纪五十年代，这个超新星的残骸依然可以借助天文望远镜的帮助观测到。
A pulsar is not a normal star, but a dense, rapidly spinning remnant of a supernova explosion.
脉冲星并不是一种正常的恒星，它是超新星爆炸后留下的高密度快速旋转的残余部分。
But if you could monitor the whole night sky, you'd see a type Ia supernova every few seconds.
但是如果我们监测全天，那么我们每几秒钟就可以看到一次Ia型超新星。
This interesting supernova caught the attention of scientists because of it's three rings.
这个有趣的超新星引起了科学家的注意，因为它有三个环。
The supernova remnant is within the plane of our Milky way Galaxy and is 2,600 light-years away.
超新星的残骸位于银河系的平面内，距离地球2600光年。
The companion star had apparently survived the original supernova explosion that created the black hole.
图中这颗伴星显然从创造黑洞的超新星爆发中幸存下来。
Can you find, in the above image, a comet, a spiral galaxy, an open star cluster, and a supernova remnant?
在上面图中，你能找到：一彗星，一旋涡星系，一疏散星团和一超新星遗迹吗？
The nebula is a large supernova remnant, an expanding cloud born of the death explosion of a massive star.
该星云是超新星的遗迹，是一个大质量的恒星死亡爆炸时的扩散云气形成的。
Since Johannes Kepler's supernova was spotted in 1604, astronomershaven't witnessed one in our own galaxy.
自1604年开普勒发现一颗超新星以来，天文学家便再也没有在我们的银河系发现这种天体。
It might sound weird, but glycerol and water make great analogs for the exploding cloud of supernova matter!
这听起来可能很奇怪，但甘油和水是超新星物质爆发云团的极好的近似物。
Then those findings were later reviewed, the old location pinpointed, and the remnants of a supernova found.
这些记录被后人加以分析，找到了准确的位置，并发现了一颗超新星的残骸。
For many it could be a once in a lifetime chance to see a supernova blossom and then fade before their eyes.
观看一颗超新星在自己眼前爆炸然后逐渐消失，这对于很多人来说，都恐怕是一辈子只能有一次的经历。
Currently, the M51 supernova, designated SN 2011dh, is still bright enough to follow with a small telescope.
M 51的超新星被冠以sn 2011dh的编号，它的亮度目前依然大到可以用小型望远镜观测到。
A Type 1a supernova caused by accreting material produces significant X-ray emission prior to the explosion.
由物质吸积导致的Ia型超新星会在爆发前产生大量的X射线辐射。
Numerous studies indicate that a supernova would have to be closer than about 75 light years to do us any harm.
许多研究表明，超新星必须距离我们约75光年以内才会危害我们。
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