what is the difference between our sun and a star?
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A star is called a "sun" if it is the center of a planetary system. A large number of planets have been found that orbit other stars, thus making these stars officially "suns." Chances are that a large percentage of the stars in the galaxy also have planets orbiting them, which would make them suns as well.
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Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. Aside from our sun, the dots of light we see in the sky are all light-years from Earth.
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Supergiant stars are the largest stars, and they are much larger than our own Sun. Some of them are thousands of times bigger than the Sun. Betelgeuse, which happens to be the 9th brightest star in the sky, is much larger than our Sun. The radius of this star is up to 1200 times than of our sun.
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Most stars are much like the Sun—giant balls of gas burning billions of miles away. These spherical stars pump out a steady stream of light that crosses vast stretches of space before it illuminates the night sky.
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The celestial object that has a fixed path (orbit), in which it moves around the star, are known as Planets. Stars have their own light, whereas planets do not have their own light, they reflect the sunlight that falls on the planets. ... The temperature of a star is very high, while that of a planet is low.
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Star is normally big cloud of very hot gas (plasma) emitting light. Meteor is visible path made of gloving plasma caused by meteoroid entering atmosphere. They both emit light, they are both made from plasma but there similarity ends.
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There actually are simple... The Sun is a star. Some stars are like the Sun. Stars reside in other galaxies as well as in ours (The Milky Way) .
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A sun or star is a large body consisting of mainly Hydrogen and helium. It is massive enough for fusion reactions to take place in its core. ... A planet is any body which orbits a star and has cleared its orbit of other bodies. A planet can be anything from a small rocky body to a large gas giant.
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The Short Answer: Our Sun is a bright, hot ball of hydrogen and helium at the center of our solar system. It is 864,000 miles (1,392,000 km) in diameter, which makes it 109 times wider than Earth.
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The Sun is a yellow dwarf star, a hot ball of glowing gases at the heart of our solar system. Its gravity holds the solar system together, keeping everything – from the biggest planets to the smallest particles of debris – in its orbit. ... The Sun has many names in many cultures.
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If its mass is great enough for fusion to occur, it's a star. So the biggest difference between a star and a planet is that a sun is massive enough for fusion.
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The Short Answer: Our Sun is an average sized star: there are smaller stars and larger stars, even up to 100 times larger. Many other solar systems have multiple suns, while ours just has one. Our Sun is 864,000 miles in diameter and 10,000 degrees Fahrenheit on the surface.
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Stars. A star is a sphere of gas held together by its own gravity. The closest star to Earth is our very own Sun, so we have an example nearby that astronomers can study in detail.
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The Sun is made of burning gases, mostly hydrogen and helium, while the Earth and the Moon are terrestrial, or rocky. The Sun rotates on its axis, as do the Earth and Moon, however it is the center of the solar system and does not revolve or orbit another object.
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The generally accepted difference is one of formation; stars are said to have formed from the "top down", out of the gases in a nebula as they underwent gravitational collapse, and thus would be composed almost entirely of hydrogen and helium, while planets are said to have formed from the "bottom up", from the ...
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The Sun is a star. There are lots of stars, but the Sun is the closest one to Earth. It is the center of our solar system. ... The planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
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The Sun is a as a G2V type star, a yellow dwarf and a main sequence star. Stars are classified by their spectra (the elements that they absorb) and their temperature.