The wild-eyed speculator in me wonders if any of these could be a generation ship from an alien species.
Date: December 22, 2021
Source: ESO
Summary:
Rogue planets are elusive cosmic objects that have masses comparable to those of the planets in our Solar System but do not orbit a star, instead roaming freely on their own. Not many were known until now, but a team of astronomers, using data from several European Southern Observatory (ESO) telescopes and other facilities, have just discovered at least 70 new rogue planets in our galaxy. This is the largest group of rogue planets ever discovered, an important step towards understanding the origins and features of these mysterious galactic nomads.
Source:
https://www.sciencedaily.com/releases/2021/12/211222153104.htm
