The 8 Planets

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by Brittfawn88
Last updated 4 years ago

Planets & Astronomy

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The 8 Planets

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Bizarre sounds of Saturn's radio emissions.

Mercury is the 1st planet in our solar system. It is a terrestrial planet, which means it is a rocky planet. It has a solid, cratered surface similar to our moon. Mercury’s thin atmosphere, or exosphere is composed of oxygen, sodium, hydrogen, helium, and potassium. There are no moons or rings surrounding Mercury. Daytime temperatures reach up to 800 degrees, and at night they drop down to -290 degrees. One day (the time it takes to rotate or spin once) takes 59 Earth days, and one year (time it takes to orbit around the sun) takes just 88 Earth days.

Uranus, is our 7th planet. It is an ice giant made up of a hot dense fluid of “icy” materials such as, hydrogen, helium, and a small amount of methane. Uranus has 27 moons, and very narrow, dark, and faint rings which are brightly colored. Uranus is the only planet to rotate horizontally (on its side). One day takes about 17 hours, and one year takes 84 Earth years.

Saturn is the 6th planet from the sun. It is a gas-giant planet with no solid surface. Its atmosphere is mostly made up of hydrogen, and helium. Saturn has 53 known moons, and has 7 rings that have several gaps and divisions between them. One day on Saturn takes 10.7 hours, and one year takes 29 Earth years.

Venus is the 2nd planet from the sun. It is a rocky planet with a solid surface that is cratered, and has a volcanic landscape. Its atmosphere is thick and toxic that is made up of carbon dioxide, nitrogen, with clouds of sulfuric acid. Its atmosphere is the reason scientists know what the effects of climate change here on Earth, can do. Venus has no moons, and no rings. Temperatures can rise up to 900 degrees, and is the hottest planet. One day takes 243 Earth days, and one year takes 225 Earth days. This means that the days are longer than the years!

Jupiter is the 5th planet that orbits our sun. It is a gas-giant planet made up of hydrogen, and helium with no solid surface. Jupiter has 50 known moons, and a very faint ring system. Jupiter’s Great Red Spot is a gigantic storm that has been raging for hundreds of years. It’s also bigger than Earth! One day on Jupiter takes 10 hours, and one year takes 10 Earth years.

Earth is the 3rd planet from the sun. It is a rocky planet made up of a solid and dynamic surface of mountains, valleys, canyons, plains, and much more. It is a terrestrial planet that is also an ocean planet with 70% of the Earth’s surface covered in oceans. The atmosphere is 78% nitrogen, 21% oxygen, and 1% of other chemicals. Earth has only one moon, and no rings. One day is 24 hours, and year takes 365 days.

Mars is the 4th planet that orbits our sun. It is a rocky planet, much like Earth. Its solid surface has been altered by volcanoes, impacts, crustal movement, and dust storms. Mars’ thin atmosphere is made up of carbon dioxide, nitrogen, and argon. It has two moons named Phobos and Deimos. It is known as the “Red Planet” because of the iron minerals in the soil oxidize, or rust, causing the Martian soil, and dusty atmosphere, to look red. One day on Mars takes just a little over 24 hours (like Earth), and a year takes 687 Earth days.

Neptune, our 8th planet in the solar system, is an ice giant. It is made up of a very thick, very hot combination of water, ammonia, and methane. Neptune has 13 known moons, and six rings that are not visible to the naked eye. At times, the dwarf planet Pluto is actually closer to the sun than Neptune due to the unusual egg shape of Pluto’s orbit. A day lasts 16 hours, and a year on Neptune takes 165 Earth years.

The 8 Planets!


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