space-time thoughts
I just read a fascinating article that describes astronomers observing the light echoes of a supernova that appeared in our night sky over 400 years ago. For a few days, the light from the supernova was so bright that it could even be seen in the blue daytime sky.
Recently, a group of astronomers witnessed reflections of this light bouncing off a dust cloud many light years to the side and rear of the site of the original supernova. As the light from that original event which was observed on Earth 436 years ago continues to travel in space-time, it will eventually reflect off of further-off clouds, and future generations will still bear witness to the after-effects of that supernova which Tycho Brahe witnessed and wrote about in the fall of 1572.
Read the article.
Recently, a group of astronomers witnessed reflections of this light bouncing off a dust cloud many light years to the side and rear of the site of the original supernova. As the light from that original event which was observed on Earth 436 years ago continues to travel in space-time, it will eventually reflect off of further-off clouds, and future generations will still bear witness to the after-effects of that supernova which Tycho Brahe witnessed and wrote about in the fall of 1572.
Read the article.