What would be the Specific Impulse of a steam-based propulsion system like this model in space?
Are there any types of engine that works this way?
Could 2 tanks be designed to rotate slowly in space creating micro gravity in the tanks. The tank facing the sun would boil the water to the other c...
The NY Times article Saturn’s Rings Are Sculpted by a Crew of Mini-Moons is really interesting and links to the recent paywalled paper in Science Close Cassini flybys of Saturn’s ring moons Pan, Daphnis, Atlas, Pandora, and Epimetheus
But I absolutely can't understand one of the photos in the NY...