The Eight Planets
In our solar system, there are eight recognized planets that orbit the sun. These planets are divided into two groups: the inner rocky planets and the outer gas giants.
The Inner Rocky Planets
The four inner planets are Mercury, Venus, Earth, and Mars. These planets are primarily composed of rock and metal, and they have solid surfaces.
Mercury
Mercury is the closest planet to the sun and the smallest planet in the solar system. It has a thin atmosphere and a heavily cratered surface.
Venus
Venus is similar in size to Earth and is often referred to as Earth's "sister planet." It has a thick, toxic atmosphere and is the hottest planet in the solar system.
Earth
Earth is the only planet known to support life. It has a diverse range of environments, including oceans, forests, and deserts.
Mars
Mars is known as the "Red Planet" due to its reddish appearance. It has a thin atmosphere and evidence of ancient rivers and lakes on its surface.
The Outer Gas Giants
The four outer planets are Jupiter, Saturn, Uranus, and Neptune. These planets are much larger than the inner planets and are primarily composed of hydrogen and helium.
Jupiter
Jupiter is the largest planet in the solar system and is known for its Great Red Spot, a massive storm that has been raging for centuries.
Saturn
Saturn is famous for its beautiful ring system, which is made up of icy particles. It is the second-largest planet in the solar system.
Uranus
Uranus is unique among the planets because it rotates on its side. It has a faint ring system and is often referred to as an "ice giant."
Neptune
Neptune is the farthest planet from the sun and is known for its deep blue color. It has the strongest winds in the solar system and is often considered an "ice giant" like Uranus.
Study Guide
- What are the four inner rocky planets?
- What is the largest planet in the solar system?
- Which planet is known for its beautiful ring system?
- Which planet is the hottest in the solar system?
- Which planet is the farthest from the sun?
- What are the two groups of planets in the solar system?
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