What would happen if each planet replaced our moon?

As moon missions accelerate, countries are working to define how to respond to emergencies and avoid interference between ...

Provided they host thick, hydrogen-dominated atmospheres, moons orbiting free-floating exoplanets could retain much of the heat generated deep within their interiors by tidal forces. Led by David ...

Extreme exomoons with tidal heating and thick, hydrogen-rich atmospheres may be able to create billions of years of potentially habitable surface conditions.