The curious minds at What If see what would happen if every planet replaced the Moon, exploring tides, gravity, and orbital ...

The sight of an open expanse stretching into infinity is a tonic for clearing cluttered minds. Promising silence, solitude ...

The Moon, long treated as a geologically dead world, is producing seismic activity from sources that scientists are only now beginning to identify. Reanalysis of decades-old Apollo seismic records, ...

Researchers have uncovered more than a thousand previously unknown tectonic ridges across the Moon’s dark plains, showing the Moon is still contracting and reshaping itself. These features are among ...

NASA’s first crewed moon mission in decades was delayed as its engineers grapple with an all-too-familiar rocket problem: hydrogen leaks. Fixing the issue is even trickier than it may seem.