I work with computers side effect of suhagra 50 The trouble, says Usoskin, was that they could see no sign in the skies of a supernova remnant within the required distance. So the scientists turned to the historical record to see if there were any clues. The handful of supernovae that have burst into existence in historical times have often been well-recorded. But, 1,238 years ago, there were reports not of a brilliant “new star” but – as one English chronicler, Roger of Wendover, put it – of the skies themselves catching fire: “Fiery and fearful signs were seen in the heavens after sunset; and serpents appeared in Sussex, as if they were sprung out of the ground, to the astonishment of all.”
|
回复：
：2021/8/4 7:35:17
返回列表