In the solar system, most asteroids are .

Most asteroids lie in a vast ring between the orbits of Mars and Jupiter

Explanation:

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the early sailors used Mariners Compass.

Explanation:

Although early navigators still relied heavily on celestial navigation, compasses made it possible for sailors to navigate on overcast days when they could not see the sun or stars. Early mariners compasses were made by placing a magnetized needle attached to a piece of wood into a bowl of water.