When a star engulfs a planet it can end up spinning so fast that it rips apart. The resulting debris could help us learn about exoplanets that were consumed
Source:
https://www.newscientist.com/article/2217229-stars-that-eat-planets-can-start-spinning-so-fast-they-rip-apart/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home