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Sun and planets

The Sun is a typical star that maintains a balanced equilibrium by the fusion of hydrogen into helium at its core, releasing this energy from its outer photosphere. Astronomers classify it as a G-type main-sequence star. The largest objects that orbit the Sun are the eight planets.
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Our Sun: Facts

The Sun doesn''t have a solid surface like Earth and the other rocky planets and moons. The part of the Sun commonly called its surface is the photosphere. The word photosphere means "light sphere" – which is apt because this is the layer that emits the most visible light. It''s what we see from Earth with our eyes.

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Sun

The Sun is moved by the gravitational pull of the planets. The center of the Sun moves around the Solar System barycenter, within a range from 0.1 to 2.2 solar radii. The Sun''s motion around the barycenter approximately repeats every 179 years, rotated by about 30° due primarily to the synodic period of Jupiter and Saturn. [151]

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Planets 101: What they are and how they form | Astronomy

Neptune, the farthest planet from the Sun, is a gas giant that orbits the Sun at an average distance of about 2.8 billion miles (4.5 billion km). Its thick atmosphere is composed mainly of

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Solar System Sizes

This illustration shows the approximate sizes of the planets relative to each other. Outward from the Sun, the planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, followed by the dwarf planet Pluto. Jupiter''s diameter is about 11 times that of the Earth''s and the Sun''s diameter is about 10 times Jupiter''s.

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The Sun, our Solar System''s star | The Planetary Society

Where did the Sun come from? The Sun formed 4.6 billion years ago from a gigantic collapsing cloud of gas and dust called the solar nebula. The leftover material from the Sun''s formation — a mere 0.14% — evolved into the rest of the Solar System we know today: planets, moons, asteroids, comets, and all. How does the Sun work?

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In Depth | Our Solar System – NASA Solar System Exploration

Introduction. The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy. Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.

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The solar system—facts and information

Along with the sun, our cosmic neighborhood includes the eight major planets. The closest to the sun is Mercury, followed by Venus, Earth, and Mars. These are known as terrestrial planets, because

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What Is the Solar System?

The four terrestrial planets or inner planets are Mercury, Venus, Earth, and Mars. Another way of classifying planets—from the perspective of Earth—is to say that Mercury and Venus are inferior planets, because their orbit is closer to the Sun. The other planets can be termed superior planets. Interview: What do we know about spacetime?

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Solar System Facts

Our solar system includes the Sun, eight planets, five officially named dwarf planets, and hundreds of moons, and thousands of asteroids and comets. Our solar system is located in the Milky Way, a barred spiral galaxy with two major

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Solar System | NASA Space Place – NASA Science for Kids

A Planet Without a Sun? Astronomers may have found a planet without a sun! explore; Space Volcanoes! Explore the many volcanoes in our solar system using the Space Volcano Explorer. explore; Thirsty? Have a comet! Could they have brought the water to our planet? explore; Gallery of NASA Solar System Images. Glorious planets and moons to view or

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Sun | Definition, Composition, Properties, Temperature, & Facts

2 days ago· solar system to scale The eight planets of the solar system and Pluto, in a montage of images scaled to show the approximate sizes of the bodies relative to one another. Outward from the Sun, which is represented to scale by the yellow segment at the extreme left, are the four rocky terrestrial planets (Mercury, Venus, Earth, and Mars), the four hydrogen-rich giant

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Solar system planets, order and formation — a guide

Learn about the eight planets in our solar system, their sizes, types, orbits and features. Find out how the sun and planets were formed and what lies beyond the edge of the solar system.

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The Sun Facts | Information, History, Size

The Sun is so big it takes up 99% of the matter in our solar system. The 1% left over is taken up by planets, asteroids, moons and other matter. The Sun is about 4.5 billion years old. It is thought to be halfway through its lifetime. Stars get bigger as they get older. As the Sun ages, it will get bigger.

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All About the Sun | NASA Space Place – NASA Science for Kids

The light of daytime comes from our closest star: the Sun. Learn more about it! Earth. Sun. Solar System. Universe. Science and Tech. Educators. All About the Sun. In our solar system, the closest planet to the Sun is Mercury. Our Sun''s closest star neighbor is called Proxima Centauri. It is approximately 4 light-years away.

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Solar System Facts | Information, Size, History and Definition

The small planets have diameters less than 13000 km. giant planets: Jupiter, Saturn, Uranus and Neptune. The giant planets have diameters greater than 48000 km. The giant planets are sometimes also referred to as gas giants. by position relative to the Sun: inner planets: Mercury, Venus, Earth and Mars. outer planets: Jupiter, Saturn, Uranus

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What is a Planet? | Planets – NASA Solar System Exploration

The ancient Greeks counted the Earth''s Moon and Sun as planets along with Mercury, Venus, Mars, Jupiter, and Saturn. Earth was not considered a planet, but rather was thought to be the central object around which all the other celestial objects orbited. The first known model that placed the Sun at the center of the known universe with the Earth

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The Nine Planets of The Solar System | Eight Planets Without Pluto

The Sun. The Sun is the heart of our solar system and its gravity is what keeps every planet and particle in orbit. This yellow dwarf star is just one of billions like it across the Milky Way galaxy.

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How The Sun''s Gravity Shapes Our Solar System And Beyond

Gravity is important in keeping planets orbit the Sun in our solar system instead of wandering off into deep space. The Sun''s gravitational force acts like an invisible tether, preventing Earth and other planets from spinning too far away or getting too close. Scientists have been intrigued by the workings of gravity since Newton''s apple fell from the tree.

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The Planets In Order | From The Sun, Information, History

The third closest planet to the Sun. Earth is at an average distance of 150 million km / 93 million mi or 1 AU away from the Sun. It only has one moon and several other smaller satellites. Earth is the biggest terrestrial planet having a diameter of 12.760 km / 7.926 mi. Surface temperatures on Earth are around 14 degrees Celsius.

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Our Solar System

Our solar system is made up of a star—the Sun—eight planets, 146 moons, a bunch of comets, asteroids and space rocks, ice, and several dwarf planets, such as Pluto. The eight planets are Mercury, Venus, Earth, Mars,

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In Depth | Our Solar System – NASA Solar System Exploration

Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as

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The sun: Facts about the bright star at the center of the solar system

As the sun enters this phase and becomes what is known as a red giant,, its outer shell will puff up and expand out to around the orbit of Mars, consuming the inner planets, including Earth. The

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About the Planets

The first four planets from the Sun are Mercury, Venus, Earth, and Mars. These inner planets also are known as terrestrial planets because they have solid surfaces. Mercury Facts. Mercury is the smallest planet in our solar system, and the nearest to the Sun. Explore Mercury.

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Our solar system: The sun information and facts

But for Earth and the other planets that revolve around it, the sun is a powerful center of attention. It holds the solar system together; provides life-giving light, heat, and energy to Earth

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Our Solar System

Finally, you would reach the rocky planets closest to the Sun. Let''s take a look at our solar system—from the outside in! First Stop: Icy Worlds. Worlds in our outer solar system consist mostly of water ice, other ices, and some rock. Various processes have shaped their surfaces into strange landscapes. Because they are so far from Earth, we

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Sun Series: The Sun, Our Star

The Sun is our closest star. Billions of years ago, it shaped the formation of our home planet and the beginning of life on Earth. Today, it provides the heat and energy that powers our civilization, but it can also disrupt our technology and spacecraft through explosive outbursts of radiation.

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The Planets In Order | From The Sun, Information,

The third closest planet to the Sun. Earth is at an average distance of 150 million km / 93 million mi or 1 AU away from the Sun. It only has one moon and several other smaller satellites. Earth is the biggest terrestrial planet

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About Sun and planets

About Sun and planets

The Sun is a typical star that maintains a balanced equilibrium by the fusion of hydrogen into helium at its core, releasing this energy from its outer photosphere. Astronomers classify it as a G-type main-sequence star. The largest objects that orbit the Sun are the eight planets.

The Solar Systemis thesystem of theand the objects thatit.Itwhen a dense region of acollapsed, forming the Sun and a

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