Planets

by Kayenne
Last updated 3 years ago

Discipline:
Science
Subject:
Planets
Grade:
5

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Planets

PLANETS

VENUSVenus is the brightest object in the night sky besides the moon. It is sometimes called Earth's sister planet becasue of their similair size and mass. It's covered in a thick layer of clouds made up of sulphuric acid. Venus has no moons! Another wierd fact is that Venus rotates the opposite direction than most of the other planets. The fist spacecraft sent to Venus was Mariner2, in 1962.

NEPTUNENeptune was the first planet to be found through math before found by a telescope. Galileo mistook Neptune for a star because it moved so slow. It has 6 faint rings sorrounding it. Neptune also has freezing winds that blow about 10 times faster than the Earth's hurricanes. Neptune's core has more rock and metal than any other outer planet.

EARTHNo one realized that Earth was just another planet until the 16th century. Most of Earth's mass is in the mantle. The rest of the mass is mainly in the core. It is a terrestrial planet, meaning it is a rocky planet created with certain rocks and/or metals. Earth is the only planet in our solar system that was not named after a Greek or Roman god. Also it is the only planet known to support life.

URANUSUranus was the first planet to be discovered in the 21st century. It was only visited by one spacecraft, Voyager 2. Just like Jupiter and Saturn, Uranus is a gas giant. Scientists havent decided which of its poles is the north pole, and which is the South. Scientists beleive that there might be a large ocean on its surface. Uranus is mainly made out of rock and ice. The atmosphere on Uranus is 83% hydrogen, 15% helium and 27% methane.

MERCURYMercury's surface is wrinkly, this is becausethe iron core cooled, and when it did it shrunk, making the surface wrinkle up. It only has 38% gravity, which is too little gravity to hold the atmosphere in place. The atmosphere it did have at one point was blown away by solar winds. Ice is not on the surface of Mercury but may be underneath. The reason for this is that Mercury is too close to the sun to have ice, be cold, or have any moons.

SATURNIn Roman mythology Saturn wasking of the gods. Saturn has 62 moons,but only 53 have been named. Also, it is theonly planet in our solar system that is lessdense than water, meaning that it would floatin water if there was a large enough body of water to hold it. It's rings are made out of ice and dust chemicals. Saturn is the second fastest spinner out of all the planets, Jupiter being first.

JUPITERJupiter is the fourth brightest object in the sky. It used to be nicknamed the "Wandering Star". Jupiter is made out of 90% hydrogen 10% helium. The region of space around Jupiter goes more than 650 million km. around. It was first visited in 1973. About 1,300 Earth's could fit inside of Jupiter. Its main feature is Jupiter's red spot which is a storm that has been going on for centuries. Some scientists beleive that if Jupiter was any bigger it could be a star!

PROXIMA BProxima B is the new planet scientist beleive could hold life. This is because it might be very similair to Earth in many ways, such as its temperatures and size. It might have a similair rocky structure instead of being a gas giant like Jupiter. Proxima B orbits in the habital zone, meaning that it could possibly have water and/or life. Researchers could only make an educated guess, so the Proxima B may not be like earth at all!

By: Hadley Kelemen

MARSThe temperature on Mars is similair to the temerature on Earth. It's surface constantly changes, due to dust storms. Mars could have water because of all the canyons, plains, and channels that may have been caused by water erosion. Scientists found enough ice on Mars to fill Lake michigan twice, but there might be more! Mars is home to the largest volcano in our solar system, Olympus Mons. The land on Mars is basically the same except no oceans and the ground is red.


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