The ring of minor planets between Mars and Jupiter is called the Asteroid Belt.

Here's some information about it:

* Composition: The Asteroid Belt is mainly composed of rocky and metallic objects, ranging in size from dust particles to dwarf planets like Ceres.

* Origin: It is believed to be remnants from the early solar system that never fully formed into a planet due to Jupiter's gravitational influence.

* Notable Objects: Some well-known asteroids in the belt include Ceres, Vesta, Pallas, and Hygiea.

* Exploration: Spacecraft like Dawn and Hayabusa have visited asteroids in the belt, providing valuable information about their composition and origins.

* Threats: While some asteroids pose a potential threat to Earth, the vast majority are far from our planet and do not pose an immediate danger.

Let me know if you have any other questions!