The first-ever interstellar comet is showing signs of brightening, suggesting it may have been heated up as it passed near to the sun
Source:
https://www.newscientist.com/article/2238063-interstellar-comet-borisov-may-be-breaking-up-as-it-exits-solar-system/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home