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Solar system

Hi guys!
My name is skyline.
I will teach you about Solar system.
1.sun
2.mercury
3.venus
4.earth
5.mars
6.jupiter
7.saturn
8.uranus
9.neptune

Have fun!

1.Sun

The Sun
Photosphere: normally mean surface of the sun
Chromosphere: The gases of the Sun extend far beyond the photosphere, which may be considered the lowest level of the solar atmosphere.
Corona: During a total eclipse of the Sun, few minutes the Moon completely covers the Sun's face, a glow appears around the darkened Sun the solar corona.
Size: 1,392,000km

Sunspots: Sunspots are cool, dark patches on the sun's surface. They come in many shapes and sizes; they often appear in groups. These spots are much bigger than the Earth. They can be over 10 times the diameter of the Earths.

Prominences: A solar prominence (also known as a filament) is a gas that erupts from the surface of the Sun. Most prominences will erupt, spewing enormous amounts of solar material into space.

Solar flares: A solar flare is a magnetic storm on surface of the sun which appears to be a very bright spot and a gaseous surface eruption.


Will solar flares destroy the Earth in 2012?
Apparently the energy from these solar flares can be enough to produce 100 billion atomic bombs. But it's nothing to be concerned about it because this all happens low down in the sun's corona (outer surface). This electromagnetic radiation produced from these solar flares includes radio waves, x-rays and gamma-rays.
Solar activity consists on an 11 year cycle and the Sun being more active in the 11th year. The next cycle to be completed will be in 2012. This is why some are expecting that will happen large solar flares in 2012.

2.Mercury

Mercury
Diameter: 4879 km
Distance from the sun: 46 million km
Period of revolution: 0.24 years
Period of rotation: 58.65 days





Atmosphere: In the early Solar System, Mercury might had a thick atmosphere, like the Earth or Venus. Unfortunately, its low gravity wasn't able to hang thick atmosphere onto the Mercury, and the solar wind from the Sun blew away all of its atmospheric particles into space, never to return.
However, Mercury still have an atmosphere which contain hydrogen, helium, oxygen, sodium, calcium, potassium and water vapor. The hydrogen and helium atoms probably come from the solar wind.

Temperature:
Max - 427°C (day)
Min - -183°C (night)

Number and names of moons: Number – 1
Moons – No moons
Interesting facts1. Gravity on Mercury
The gravity on Mercury is 38% the gravity on Earth. In other words, if you weigh 100 kilograms here on Earth, you would only weigh 38 kilograms on Mercury.

2. Half of Mercury had never been seen

3.venus

Venus
Diameter: 12100 km
Distance from the sun: 108.2 million km
Period of rotation: 243 Earth days
Period of revolution: 225 Earth days
Atmosphere: Venus has a dense atmosphere, composed chiefly of carbon dioxide, which generates a surface pressure 90 times greater than that on Earth. This massive blanket of carbon dioxide is also responsible for a runaway greenhouse effect that heats the planet’s surface to an average temperature of 467°C - hot enough to melt lead.
Temperature:
Max - 465°C
Min - -184°C
Number and names of moons:
Number – 2
Names of moon - No moons
Between Venus and Earth
Earth and Venus have very similar size and mass, and they orbit the Sun close to the Sun in very similar orbits. The size of Venus is only 650 km less than the size of Earth, and the mass of Venus is 81.5% the mass of the Earth.
Rotation of Venus
Venus rotates backwards compared to all the other planets in the Solar System. If you could fly up above the Solar System and then look down at the planets, all of them are turning in a counter-clockwise direction. Except Venus. It's rotating in a clockwise direction.

4.Earth

Earth
Diameter: 12,756.28 km
Distance from the sun: 149,597,870 km
Period of rotation: 23 Hours 56.1 Min
Period of revolution: 1 Year, 0 Days, 0 Hours
Atmosphere: Mostly Nitrogen and Oxygen.
Temperatures:
Max – 50°C
Min – -70°C
Number and name of moons:
Number – 3
Names of moons - Moon
Earth is mostly iron, oxygen and silicon
If you could separate the Earth out into piles of material, you'd get 32.1 % iron, 30.1% oxygen, 15.1% silicon, and 13.9% magnesium. Of course, most of this iron is actually down at the core of the Earth. If you could actually get down and sample the core, it would be 88% iron. 47% of the Earth's crust consists of oxygen.

Earth doesn't take 24 hours to rotate on its axis
It's actually 23 hours, 56 minutes and 4 seconds. This is the amount of time it takes for the Earth to completely rotate around its axis; astronomers call this a sidereal day.

5.Mars

Mars
Diameter: 6,792km
Distance from the sun: 227,939,100 km
Period of rotation: 24 hours, 37' 23''
Period of revolution: 687 days
Atmosphere: Mars has a very thin atmosphere made mostly of carbon dioxide. The atmospheric pressure on Mars changes seasonally because the temperature is cold enough that some of the carbon dioxide freezes during the winter and "snows" onto the polar cap.
Temperature:
Max – 36 degrees C
Man - -123 degrees C
Number and name of moons:
Number – 4
Name of moons – Phobos
Deimos
Interesting facts!
1. Mars is seventh largest planet in our solar system.
2. Mars is named after roman god of war.

6.Jupiter

Jupiter
Diameter: 142, 984 km
Distance from the sun: 778570000 km
Period of rotation: 9.8 hours
Period of revolution: 12 years
Atmosphere: The atmosphere is the largest in the solar system and is mainly composed of hydrogen and helium.


Temperature:
Max – -148.15 celsius
Min - -223.15 celsius
Number and name of moons: Number – 5
Name of moons – Adrastea , Aitne , Amalthea ,Ananke
Interesting facts1. Jupiter is the fastest spinner in our solar system - For all its size and mass, Jupiter sure moves quickly. In fact, the planet only takes about 10 hours to complete a full rotation on its axis.
2. The Clouds on Jupiter are only 50 km thick

7.Saturn

Saturn
Diameter: 120,536 km

Distance from the sun: 1.4 billion km

Period of rotation: 10 hours 32 - 47 minutes.


Period of revolution: 29.5 years

Atmosphere: 75% hydrogen and 25% helium

Temperature: Max – -130° celsius
Min – -191° celsius
Number and name of moons:
Number – 6
Name of moons – Aegaeon, Aeqir, Albiorix, Anthe .
Interesting facts!
1. Saturn is the second largest planet in the Solar System
2. The first astronomers thought the rings were moons

8.Uranus

Uranus
Diameter: 51,118 kilometers
Distance from the sun: 2872.5 * 106 kilometers
Period of rotation: 17.2 hours
Period of revolution: 30,589 days
Atmosphere: Mainly of molecular hydrogen and helium.
Temperature:
Max – -200°C
Min –-214°C

Number and name of moons:
Number – 7
Name of moons –Cordelia, Ophelia, Bianca, Cressida

Interesting facts1. Uranus is the coldest planet in the Solar System
2. Uranus has rings( very dark )

9.neptune

Neptune
Diameter: 49,528 km

Distance from the sun:
4,503,443,661 km

Period of rotation: 18 hours

Period of revolution: 8 years

Atmosphere: mainly of hydrogen, with a small percentage of helium and a smaller percentage of methane.

Temperature:
Max – -220 Degrees Celsius
Min –-223 Degrees Celsius
Number and name of moons:
Number – 8
Name of moons – Naiad, Thalassa, Despina, and Galatea
Interesting facts
1. Neptune's surface gravity is almost like Earth.
2. Neptune has the strongest winds in the Solar

welcome to my diary!

Hi my name is skyline. welcome to my diary.
I`m going to write diary everyday.
I hope you will enjoy my diary.