Thinking about volcanoes on the Moon

 

The dark patches on the Moon are called Seas. The Latin word is Mare. They just looked like that to the first astronomers. Turns out that they are basalt lava flows that are darker because they are more iron-rich and thus less reflective. It got me thinking about volcanic activity on the Moon. I had never thought about the internal structure of the Moon. It turns out it does have a core and a structure that is very similar to the Earth. Lots to learn here!