Facts about the Sun: Don’t look directly at the Sun, which can hurt your eyes. Scientists study the Sun through special filtered telescopes.

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Solar energy is energy from _____.

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Other _______________ travel in this solar system, such as moons, asteroids, and comets.

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Randy decided to _______________ things he was curious about.

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Iron and rock make up most of the four smaller _______________ planets of our solar system.

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Gas and rock make up most of the four larger_______________ planets.

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Which planet is Earth's sister?

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Which Planet is the largest?

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One similarity between asteroids, comets and meteoroids is that they all:

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Huge chunks of rock and metal (some measuring miles wide) and are believed to be left-over pieces of planets and moons are called:

Although Venus is almost twice as far from the Sun as Mercury, its surface temperature is much hotter. Which of the following is the best explanation for Venus’ high temperature?