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The sun may have started from the nebula of our solar system. The nebula was mostly made of dust and gasses, and slowly condensed most of it's materials to one area, and eventually, pressure was great enough that nuclear fission could occur. Nuclear fission is a continuing explosion that provides the sun with energy, and light. That's how the sun was formed!
~The rest of the material of the nebula formed the rest of the planets in the solar system.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoOur Sun is about 4.5 x 109 years old, and is a normal main sequence star.
Check out Hertzsprung - Russell diagram.
It is essentially 75% hydrogen and 25% helium.
It was formed along with the rest of the Solar system by the accumulation of gas and dust.
Our Earth contains a much greater proportion of heavy elements, so it accumulated from debris left over from a Super Nova explosion, for a star such as our Sun is not massive enough to manufacture elements heavier than iron.
The age of the Universe is about 13 x 109 years.
Wiki User
∙ 11y agoThe best guess that scientists have for the origins of the solar system is the Solar Nebula Hypothesis.
A star or a number of stars exploded leaving a dispersed cloud of various elements and particles in space. Objects with mass are attracted to other objects with mass so the atoms in the cloud begin to accumulate. Within the centre of the accumulation, there is a higher pressure and therefore a higher temperature. At temperatures exceeding 10000K, a protostar may form in the centre of the accumulation. Surrounding the protostar is a disk of various gases and atoms and particles. This disk is prevented from collapsing because the system is rotating.
Within the disk, stuff starts to happen. Elements that can solidify at higher temperatures do so in closer proximity to the protostar (which becomes the Sun), elements that solidify at lower temperatures do so further away from the young Sun. These solids form planets through the process of cold accretion. Planets closer to the Sun are mainly composed of elements that solidify at high temperatures. The formation of planetoids prevents other planets from beginning to form by using up all of the available surrounding materials.
Solar wind blows excess material away into space.
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How do astronomers think the sun started?
Astronomers think the Sun started out like all other stars: A star birth nebula, a massive stellar gas cloud that growing stars absorb with their gravity to fuel the nuclear reaction in their cores. So basically, the Sun is a giant swirling ball of gas, but more specifically, the Sun is a star in the classification of a Yellow Dwarf, which really isn't that large of a star, as a matter of fact, compared to VY Canis Majoris, a star in the classification of a red giant, and the biggest known star in the universe, the Sun is approximately 2,800 times SMALLER than VY Canis Majoris.
Astronomers can see planets because planets they?
I think its because they reflect light from the sun at night ( part of earth is Covered by the Moon but is still reflected by the sun's rays.)
Did astronomers believe that the sun was part of earth?
No.
What is the average distance from earth to the sun for astronomers?
The average distance between the Earth and sun, in round figures, is 93 million miles. Astronomers tend to maintain the same distance from the sun that ordinary people do.
How do astronomers observe the sun at different wavelengths?
Cus they is BOSS
How long do astronomers estimate the sun will last before it begins to die?
Astronomers think the sun will die in 2012
How do astronomers think the sun have begun?
I think that it started out as a star just like any other and then it gathered energy and grew larger over trillions of years before dinosours, or something. hope it helped!
An explosion of hydrogen gas from the sun's surface?
A solar flare, I think
How do astronomers think the sun started?
Astronomers think the Sun started out like all other stars: A star birth nebula, a massive stellar gas cloud that growing stars absorb with their gravity to fuel the nuclear reaction in their cores. So basically, the Sun is a giant swirling ball of gas, but more specifically, the Sun is a star in the classification of a Yellow Dwarf, which really isn't that large of a star, as a matter of fact, compared to VY Canis Majoris, a star in the classification of a red giant, and the biggest known star in the universe, the Sun is approximately 2,800 times SMALLER than VY Canis Majoris.
What is it important for astronomers to study the sun?
SSo the astronomers can tell us what is happening to the sun. that good enough? :)
What is a heliologist?
A heliologist is someone who studies the sun. They may also be called solar astronomers or solar physicist.
What is used when astronomers measure the distance from the sun to the earth?
Parallax is the method that astronomers use to measure the distance from the sun to the earth.
Astronomers can see planets because planets they?
I think its because they reflect light from the sun at night ( part of earth is Covered by the Moon but is still reflected by the sun's rays.)
Why do most astronomers think that the sun was found?
Today's astronomers inherit the benefit of literally centuries of measurements with ever greater accuracy and precision. Standing as they do on the shoulders of giants, they have begun to perceive a true sense of the huge ginormity of the sun and its dimensions, and are coming to recognize that the sun is so gigantic that it has never been lost.
Did astronomers believe that the sun was part of earth?
No.
How long have astronomers been trying to find out what the sun orbits?
For two or three hundred years, astronomers have had a fair idea the the Sun is not the center of the Universe.
How did astronomers think the sun began?
at first there was a very big cloud of hydrogen then, because of the gravity, the cloud started to get smaller and smaller, the hydrogen particles got closer and some time later, the pressure got so, huge that a nuclear fushion process became and the hydrogen started to turn into helium
