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Adapted from Our Solar System: In Depth

by NASA

The solar system we call home is located in an outer spiral arm of the vast Milky Way galaxy. It consists of the Sun (our star) and everything that orbits around it. This includes the eight planets and their natural satellites (such as our Moon). Also, it includes the dwarf planets and their satellites, as well as asteroids, comets, and countless particles of smaller debris.
The order and arrangement of the planets and other bodies in our solar system is due to the way the solar system formed. Nearest the Sun, only rocky material could withstand the heat when the solar system was young. For this reason, the first four planets—Mercury, Venus, Earth, and Mars—are terrestrial planets. They're small with solid, rocky surfaces and are known to take the shortest amount of time to revolve around the Sun as compared to the other planets.
Meanwhile, materials we are used to seeing as ice, liquid, or gas settled in the outer regions of the young solar system. Gravity pulled these materials together. This is where we find the gas giants Jupiter and Saturn and the ice giants Uranus and Neptune.
The solar system extends much farther than the eight planets that orbit the Sun. The solar system also includes the Kuiper Belt that lies past Neptune's orbit. This is a sparsely occupied ring of icy bodies. Here, almost all bodies are smaller than the most popular Kuiper Belt object, the dwarf planet Pluto.
In the early 17th century, Galileo Galilei's discoveries using the newly invented telescope strongly supported the picture of a solar system in which all the planets, including Earth, revolve around a central star, the Sun. At the time, this was called the Copernican heliocentric theory. It was a revolutionary idea, as most people then thought Earth was the center of the universe.
Since then, we have learned much about our solar system and what lies beyond it using ground-based telescopes, spacecraft, and mathematical models.
Which idea is presented in both "Our Solar System: In Depth" and "Planets of Our Solar System"?

A.
Some planets take less time to orbit around the Sun than the others.
B.
Our solar system includes terrestrial planets as well as gas and ice giants.
C.
The Kuiper Belt, which is beyond Neptune, includes the dwarf planet Pluto.
D.
In the past, people thought that Earth was the center of the universe.

2 Answers

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Answer:

The answer is A. Some planets take less time to orbit around the Sun than the others

Step-by-step explanation:

(I took the test and got it right)

But it does have a chart of the different amounts of time it takes for the planets to orbit around the sun.

User Parimal
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Answer:

B. Our solar system includes terrestrial planets as well as gas and ice giants.

Step-by-step explanation:

The passage adopted from "Our Solar System: In Depth" centers around this claim and theory that our solar system includes terrestrial planets as well as gas giants. The line in the start of the excerpt"It consists of the Sun (our star) and everything that orbits around it" introduces this claim and in next line the same claim is explained in more details.

In the second part line in the start "newly invented telescope strongly supported the picture of a solar system in which all the planets, including Earth, revolve around a central star, the Sun" also claims the same thing with different words. A slight difference between the first excerpt and the second is that, the first divides the planets in two groups i.e 1 - solid and rocky and 2 - icy, gas giants and in liquid form; while the second excerpt does not give just classification. However the main idea in both the excerpt remains the same i.e our solar system includes planets, which revolve around a central star - Sun.

User Rea
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