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Schoolwork of Astronomy

The solar system

Topic: Astronomy

Introduction

The solar system consists of planets, asteoriter, comets and moons of
the sun's attraction, located in special orbits around the sun. All
plane States rotates around the sun in the same direction. It is counterclockwise if one looks
the "north" of the Earth. View school work »

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Asteroids and comets

Topic: Astronomy

Asteroids

The asteroids or småplaneterna are bodies of rock that for the most part are in orbits between Mars and Jupiter. The bulk of the asteroid belt lies between 2.2 and 3.3 * astronomical units from the sun. The largest known asteroid is Cere, With a diameter of 1000 km. View school work »

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The planet Venus

Topic: Astronomy

Venus is the planet that is second closest to the Sun (for Mercury). Venus is also the planet that is closest to Tellus in its orbit plus it is the planet most similar to the Tellus. Therefore, usually called the planet Venus for Tellus twin planet. Venus mass (0.8150) almost as big as the Tellus (1.0). Venus radius is 6052 km, and is almost as large as the Tellus radius of 6371 km. View school work »

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The Moon

Topic: Astronomy

The Moon is our only natural satellite. The moon revolves around the Earth at an average distance of 384000 km or 60 jordradiers distance. It has a rotation of about 27.32 days (hence the name of month) and a medium speed of 1023 km / s. The moon has a bound rotation. This means that the time a lap around the Earth at the same time as it makes one revolution around its axis. View school work »

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General Space

Topic: Astronomy

The first spacecrafts

Sputnik 1 was the world's first artificial satellite. It was launched on October 4
1957 by the Soviet Union. It was the size of a beach ball with a radio transmitter inside.
1957 November 3 was the first creature out in the ran, it was a dog, we name
Laika, she went up with a spacecraft called Sputnik 2. View schoolwork »

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URANUS

Topic: Astronomy

Uranus, Neptune and Pluto is the solar system's outermost planets (of the currently known).
With the naked eye can only see Uranus- the other is too faint. These cold planets need a long time to go around the sun. Uranus is the planet of the three closest to the Earth. It has a diameter of about 51 000 kilometers, or about four times the size of Earth. View school work »

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The Universe

Topic: Astronomy

The universe has an end?

The universe had a beginning some 15 billion years ago, but it has an end? Can you tell?
If the universe is infinite or not depends on how much matter really is out there. Astronomers have observed that the universe is expanding. View school work »

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MILKY WAY

Topic: Astronomy

Stars

The Milky Way is a star system or galaxy. There are 100miljarder stars in the Milky Way. There are a hundred thousand light years from one side to the other side. A light year is the distance that light is 300,000 km / s in a year. All the stars we can see with the naked eye belong to the Milky Way. View school work »

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What is a supernova

Topic: Astronomy

A supernova is an exploding star. They're merging of black holes and neutron stars and are among the most violent events in the universe. It requires a certain number of solar masses for a star to become a supernova. The stars that are between 1.4 to 3 solar masses (one solar mass = 1.9891 • 1030 kg) will supernovae when they die. A supernova can shine up to a hundred billion times brighter than our sun, which is as much as the luminosity of a galaxy. View school work »

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Black holes

Topic: Astronomy

A black hole is a concentration of mass with a gravitational field which is such that the escape velocity in its vicinity exceeds the speed of light. This means that nothing, not even light, can overcome the body's gravity, which prefix black. As for after the stage of holes, it is not about any hole in the usual sense, but a region of space from which nothing escapes. View school work »

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