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Falling Stars


Submitted By kim3
Words 318
Pages 2
Falling stars aren't stars at all, they're actually tiny pieces of dust impacting the Earth's atmosphere and burning up. You might also have heard them called "shooting stars", but their scientific name is "meteors". Let's learn some more about falling stars.
Space looks empty, but there's all kind of stuff out there: gas, dust and tiny rock and ice fragments. The tiny pieces of rock or ice are known as meteoroids. They could have been left over from the formation of the Solar System 4.6 billion years ago. Or maybe they were part of the tail of a comet that was making a near pass to the Sun. Rocks and asteroids can collide with one another in space and generate meteoroid debris. Who knows how long the tiny object was orbiting the Sun until its path finally crossed the Earth.
When a meteoroid strikes the Earth's atmosphere, it burns up leaving a tiny trail in the sky. This trail is the falling star, or meteor. The size of the trail depends on the speed of the object, the angle it struck the atmosphere at, and the amount of mass that it has. The largest objects can leave a trail across the sky that lasts for a few seconds.
Although you can see falling stars any night of the year, there are certain times when they're more frequent. These are the times when the Earth orbit takes us through the tail of an ancient comet. We'll pass through the tail fragments at the same time every year, so a meteor shower is predictable. Some famous meteor showers are the Perseids in August, and the Leonids in November.
So remember, when you're looking for falling stars, you're not seeing stars at all, but meteors; tiny chunks of rock and ice impacting the Earth's atmosphere and burning up.

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