Future Space
Just like any good story, the tale of our solar system is filled with characters who exited the stage early or whose existence has faded into the mists of hypotheses and legends. In this case, we’re talking about celestial objects—moons that were spotted and then never seen again, planets that might have only been imagined but were considered as real as the ones we know today, if only for a moment or even centuries.
Credit Insane Curiosity