Our Moon is also in the Goldilocks zone, and rocky. But it lacks an atmosphere.
Is this because the Moon is small, and some threshold of gravity is required? Or somehow related to the Moon's cold and inert interior, thus no gaseous volcanoes? Or just a happenstance of composition?
The Moon is a concrete anchor for imagining exosolar worlds.
I talk out of my ass, by if I recall the numerous pseudo-scientific tv-show I've seen correct, the moon is pretty much similar to the Earth, but due to its smaller size, it has cooled down much faster. Additionally, it's not heavy enough to sustain an atmosphere, which can bind water to the planet.
Is this because the Moon is small, and some threshold of gravity is required? Or somehow related to the Moon's cold and inert interior, thus no gaseous volcanoes? Or just a happenstance of composition?
The Moon is a concrete anchor for imagining exosolar worlds.