Activity for shootshi‭

Type	On...	Excerpt	Status	Date
Question	—	Existence of a celestial body big enough for early civilization to be thought of as a second moon Is there a possible scenario in which once a year a celestial body can be seen from the surface of the Earth-like planet for a short period of time? With it being big enough for early civilization to consider it a second moon but much smaller than the actual one. And occurring each year for one th... (more)	—	over 5 years ago