It's only the second observed "interloper" to cross into our solar system, but interstellar comet 21/Borisov looks incredibly similar to our own comets based on new observations by astronomers. They're also learning new details about the comet, like the fact that it has a reddish hue, according to a new study.


원문출처 : https://www.cnn.com/2019/10/14/world/insterstellar-comet-borisov-scn/index.html