Earth's gravity may have kept the early moon's volcanic heart beating

We typically think of the moon as a static, floating object that has remained the same for basically its entire lifetime, with an occasional asteroid impact serving as an exception. That understanding is grounded in physics—the moon should have cooled rapidly after forming when a huge protoplane...

Source: [Phys.org](https://phys.org/news/2026-11-earth-gravity-early-moon-volcanic.html)