A horseshoe magnet with the letter N on one end and the letter S on the other

Horseshoe magnets are the easiest kind of magnet to recognize. Image Credit: NASA

      a material or object that produces a force that pulls on other magnetic materials

NASA's Mars Pathfinder used magnets to collect dust from the air on Mars.

We used a magnet to pick up the sewing needles that dropped from the package.

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