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The red sign stand for.

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Have you ever seen a falling star? Some people call them shooting stars. They're not really stars at all! It might surprise you to find out that these streaks of light are caused by dust and rock. Dust and rock in space sometimes are pulled into Earth's atmosphere. As they fall, friction from falling through the air gets them very hot. They get so hot they catch on fire! In space, they are called meteoroids. As the meteoroid falls, it usually burns up in the atmosphere. The streak of light we see is called a meteor, falling star, or shooting star. If part of the meteoroid doesn't burn up, the leftover rock that lands on Earth is called a meteorite. Where does the dust and rock come from? Most of it comes from comets. As comets travel around the sun, they leave behind a trail of gas, dust, and small bits of rock. When Earth passes through the dusty trail, we see falling stars!

3. As the star is falling, friction through the air make it...

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Have you ever seen a falling star? Some people call them shooting stars. They're not really stars at all! It might surprise you to find out that these streaks of light are caused by dust and rock. Dust and rock in space sometimes are pulled into Earth's atmosphere. As they fall, friction from falling through the air gets them very hot. They get so hot they catch on fire! In space, they are called meteoroids. As the meteoroid falls, it usually burns up in the atmosphere. The streak of light we see is called a meteor, falling star, or shooting star. If part of the meteoroid doesn't burn up, the leftover rock that lands on Earth is called a meteorite. Where does the dust and rock come from? Most of it comes from comets. As comets travel around the sun, they leave behind a trail of gas, dust, and small bits of rock. When Earth passes through the dusty trail, we see falling stars!

4. the streak of light we see is called a