The largest comet ever discovered has been traveling towards the Sun for over 1 million years, and its gigantic scale shines a light on the mysterious objects that make up one of the biggest structures in our Solar System.
, astronomers used the Hubble Space Telescope to confirm that the solid center of the giant comet C/2014 UN271 is the largest comet nucleus ever detected. It measures a staggering 50 times larger than most known comets, at almost 140 kilometers wide .
Sounds pretty big, right? It is, theoretically speaking. However, the Oort Cloud is so far away and so difficult to detect, it's basically a gigantic hypothetical mystery, even though astronomers consider it to be one of the largest structures in our Solar System.
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