1784: Sir William Herschel writes that dark areas on Mars are oceans and the lighter areas are land. He speculates that Mars is inhabited by intelligent beings who "probably enjoy a situation similar to our own."
1784: Sir William Herschel writes that dark areas on Mars are oceans and the lighter areas are land. He speculates that Mars is inhabited by intelligent beings who "probably enjoy a situation similar to our own."
Aristotle knew this in the 4th Century BC!....... Https://www.astrobio.net/retrospections/plurality-of-worlds/amp/