Close Approach of a Rogue Planet to our Solar System
While unlikely, a close encounter with a rogue planet would be a rare and significant event. It’s way more likely we’d see a comet or asteroid come close to our planet than a random, rogue planet. This is because the closest planet is light-years away. As Many Worlds writes, ” The nearest rogue planet to our Earth is WISE-0855-0714. It was discovered in 2014 and is approximately 7.2 light-years away from us.” Simply put, this means that the planet isn’t coming near us anytime soon, though it is spectacular that one planet is not too far away from us now.
NASA’s Nancy Grace Roman Telescope is observing rogue planets. According to Naoki Koshimoto, author of a study regarding rogue planets, “Roman will be sensitive to even lower-mass rogue planets since it will observe from space. The combination of Roman’s wide view and sharp vision will allow us to study the objects it finds in more detail than we can do using only ground-based telescopes, which is a thrilling prospect.” It would be a miracle to have these findings during our lifetime (Many Worlds).