1. Earth is one giant magnet! Our planet has a melted iron-and-nickel outer core that spins as Earth rotates, creating a massive magnetic field. This invisible shield stretches far into space and protects us from harmful solar wind!

2. They have invisible force fields. Every magnet is surrounded by an unseen force field called a magnetic field. Even if a magnet isn't physically touching a metal paperclip, its magnetic field can pull the paperclip across a table!

3. Opposites attract, but likes repel. Every magnet has a North Pole and a South Pole. If you bring two North poles or two South poles together, they will push each other away! But if you bring a North and a South pole together, they snap right together.

4. Animals use magnets as a built-in GPS. Sea turtles, homing pigeons, butterflies, and salmon have tiny particles of magnetic minerals inside their bodies. This lets them feel Earth's magnetic field like a internal compass to navigate thousands of miles without getting lost!

5. A shepherd reportedly discovered them by accident. Ancient legend says a Greek shepherd named Magnes was walking across a field when the iron nails in his sandals and the tip of his staff got stuck to a black rock—a naturally magnetic mineral called lodestone!

6. Maglev trains float on air using magnets. Super-fast "Maglev" (magnetic levitation) trains in places like Japan and China use powerful electromagnets to hover just above the track. Because there is no wheels-on-rail friction, they can glide smoothly at over 300 mph (480 km/h)!

7. Most metals aren't magnetic at all. Many people think magnets stick to all metal, but they actually only attract a few special metals—mainly iron, nickel, and cobalt. Metals like aluminum foil, gold, silver, copper, and brass won't stick to a magnet at all!