the Moon is often described as being shaped like a lemon. It's not a perfect sphere, but rather an oblate spheroid with a slight bulge on the side facing Earth and another on the opposite side. This shape is primarily due to the Moon's early formation and the influence of Earth's gravity. Here's a more detailed explanation: Tidal Forces: Shortly after the Moon formed, it was still hot and partially molten. Earth's powerful gravity exerted tidal forces, causing the Moon's shape to become elongated. This resulted in a bulge on the side facing Earth and another on the opposite side. Early Molten State: The Moon was not completely solid when these tidal forces acted on it. Its thin outer crust was floating on a molten core, allowing the tidal forces to deform the Moon's shape. Not a Perfect Sphere: Due to the early tidal forces and the Moon's internal structure, it never achieved a perfectly spherical shape. The bulges remain, making it more like a lemon than a ball.
I was going to add more, but didn't want to make post too long.
"the Moon does have pits on its surface. These are steep-walled depressions, some of which may be openings to lava tubes, which are tunnels formed by cooled lava flows. Some of these pits could potentially offer shelter for future astronauts due to stable temperatures and protection from radiation and micrometeorites. "
